Why does ice float on water? by Matthew Koh https://padlet.com/matthew_koh/qkc2azp1krgs60lr Why does ice floats on water? Try to find some resources online and share your individual responses in the Padlet activity below. en-us 2022-03-08 07:47:29 UTC 2022-04-28 00:45:25 UTC hello@padlet.com Malcolm DFST05 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2149347110 when ice is frozen, the water molecules expand and form an open cage-like structure, decreasing its density, hence floating on water]]> 2022-04-19 22:12:56 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2149347110 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2150550601 the density of ice is 0.917 g/cm³ while the density of pure water is 1 g/cm3. since ice is less dense than pure water, hence it will float on water ]]> 2022-04-20 15:30:59 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2150550601 chloe https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2151534831 ice is less dense than water. in water, hydrogen bonds are constantly forming and breaking between H₂O molecules. however, below 4°C, kinetic energy of the molecules is lower than the energy required to break the hydrogen bonds. thus, more hydrogen bonds are being formed which results in an ordered, hexagonal structure of molecules which is less dense than the normal disorderly structure in water. thus, ice floats on water.

references:
Morton, C. and Zaidan, G., 2013.

watch?v=UukRgqzk-KE [Accessed 21 April 2022]

]]> 2022-04-21 06:05:43 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2151534831 Breanna https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2151570462 Ice is 9% less dense than water. Since the water is heavier than ice, ice will float on water. Water consists of positively charged hydrogen atoms and negatively charged oxygen atoms. When water cools, the hydrogen bonds adjust to hold the negatively charged oxygen atoms apart, which prevents the ice from becoming any denser. Therefore, the density of water decreases as temperature decreases, causing ice to be less dense than water.]]> 2022-04-21 06:38:57 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2151570462 Cheryl https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2151870454 Ice is about 9% less dense than water. Since water is heavier, it displaces the ice, causing the ice to float to the top. When water freezes into ice, the distance between water molecules is larger than in liquid water because the water molecules are organized in a stable lattice and also due to the hydrogen bonds formed, which allow the molecules to be spaced farther apart, thus making them take up more space, decreasing the overall density. Hence, being able to float on water.

]]> 2022-04-21 11:12:20 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2151870454 Ashley https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2151931501 Ice floats as it is less dense than water . Hydrogen bonds formed when water freezes ,allowing molecules to be spaced apart , decreasing the overall density and causes ice to float.]]> 2022-04-21 12:12:35 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2151931501 yoke ying https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2152101394 Hydrogen bonds present in water form an extended network between the water molecules. During the liquid phase, the water molecules are free to move and have high kinetic energy, the hydrogen bonds in this state are constantly breaking and reforming. during freezing, ice forms, the temperature of the water decreases, water molecules lose their kinetic energy, forming more hydrogen bonds than breaking. This results in the formation of a hexagonal lattice structure that is less dense than the disordered structure of liquid water. Hence, ice floats on water.]]> 2022-04-21 14:05:32 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2152101394 christy https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2153862658 Ice is about 9% less dense than water. Since the water is heavier, it displaces the lighter ice, causing the ice to float to the top.
in the liquid state, hydrogen bonds are constantly forming and breaking as the water molecules slide past each other. however after freezing into the solid ice state, there is not enough heat energy to break the hydrogen bonds. the water molecules will thus be pushed further apart and form a crystalline structure maintained by the hydrogen bonds. this causes ice to have a larger volume and a smaller density than liquid water.]]> 2022-04-22 16:45:14 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2153862658 sin hwee https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154319189 ice has a density of about 0.917 g/cm^3 while water has a density of around 0.9998 g/cm^3. since ice is less dense than water, the ice will float. the reason why ice density is more than water is because water consists of positively charged hydrogen atoms and negatively charged oxygen atoms. when water cools, the hydrogen bonds adjust to hold the negatively charged oxygen atoms apart, preventing ice from becoming any denser.]]> 2022-04-23 03:06:37 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154319189 Suo Jie https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154341145 Ice is about 9% less dense than water, since water is denser, it displaces the ice and causes it to float to the top of the water. In water molecule, one oxygen atom is strongly bonded to two hydrogen atoms with covalent bonds. Water molecules tend to attract each other by forming weaker hydrogen bonds between the positively-charged hydrogen atoms and negatively-charged oxygen atoms in the surrounding water molecules. As water temperature decreases, the weaker hydrogen bonds begin to hold the negatively-charged oxygen atoms apart, forming a crystal structure. There is more space taken up by the water molecules, thus lowering the density of ice.]]> 2022-04-23 03:55:48 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154341145 Ng Jia Qi https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154354304 Ice is less dense than water. When the water freezes, the hydrogen bonds form allows the particles to be spaced part, occupying more space. Since density is mass over volume, increase in volume decreases the density, therefore ice floats on water ]]> 2022-04-23 04:19:07 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154354304 tze xin https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154355465 At 25℃, water molecules are bending, stretching, spinning, and moving through space. When the temperature is decreased, each of the molecules lose kinetic energy. They bend, stretch, spin, and move less. This causes them to take up less space. At freezing temperatures, water molecules don't pack closely together. This is due to the presence of hydrogen bonds between water molecules. In a single drop of water, hydrogen bonds form extended networks between trillions of molecules, and these bonds are constantly breaking and reforming. Above 4℃, the kinetic energy of water molecules keep their interactions with each other short. Hydrogen bonds form and break quickly. Below 4℃, the kinetic energy of water molecules start to fall below the energy of the hydrogen bonds. So hydrogen bonds form more quickly than they break, forming a ordered, hexaganol structure that makes up ice. This structure is less dense than the disordered structure of liquid ice. Since it is less dense than liquid water, ice floats on water.

Taken from https://www.youtube.com/watch?v=UukRgqzk-KE]]> 2022-04-23 04:22:41 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154355465 peijun https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154368907 as water freezes into solid form, water molecules are able to form more stable hydrogen bonds, thus locking them into its position. this results in lesser hydrogen bond formed with other water molecules, leading to water molecules in ice not being as close as those in liquid water. thus density is reduced which results in ice being able to float on water.]]> 2022-04-23 04:42:44 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154368907 Xaviera https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154391903 As water cools and freezes, it becomes less dense due to the unique nature of hydrogen bonds.

Each molecule of water consists of one oxygen atom strongly bonded to two hydrogen atoms with covalent bonds. This fact is reflected in the chemical formula for water: H₂O.

Water molecules tend to be attracted to each other by weaker hydrogen bonds. These form between the positively-charged hydrogen atoms and negatively-charged oxygen atoms in nearby water molecules.

As water temperature decreases, the weaker hydrogen bonds begin to hold the negatively-charged oxygen atoms apart, forming a rigid crystal honeycomb structure we call ice. The water molecules in ice take up about 9% more space than liquid water, which means ice is about 9% less dense

]]> 2022-04-23 06:06:01 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154391903 Rachelle https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154403380 Ice is less dense than water. Each molecule of water consists of one oxygen atom strongly covalently bonded to two hydrogen atoms. Water molecules are attracted to each other by weak hydrogen bonds which forms the positively charged hydrogen atoms and negatively charged oxygen atoms in nearby water molecules. When water cools and freezes, the weaker hydrogen bonds will hold the negatively charged oxygen atoms apart, forming the structure of ice. The water molecules in ice takes up 9% more space than liquid water thus ice is 9% less dense than water, causing it to float on water. ]]> 2022-04-23 06:44:29 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154403380 Tifanie https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154408030 Ice floats on water because it is less dense than water. When water cools, water molecules form hydrogen bonds with other water molecules to form hexagonal lattice structures, causing the the negatively-charged oxygen atoms to be held apart. This results in an increase number of spaces between the hexagons which prevents ice from becoming any denser.
This explains why ice is denser than water despite it being a solid.

]]> 2022-04-23 06:59:32 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154408030 Wan Yan https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154410875 Ice is about 9% less dense than water. Since ice is less dense than water, ice will float on water. Water molecules are attracted to each other by hydrogen bonds between the positively charged hydrogen atoms and the negatively charged oxygen atoms of neighbouring water molecules. When the water cools to below 4degC, the hydrogen bonds adjust to hold the negatively charged oxygen atoms apart. This produces a crystal lattice structure which is less dense than the structure of water. ]]> 2022-04-23 07:07:58 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154410875 charmaine https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154418390 Ice is about 9% less dense than water. The hydrogen bonds that form when water freezes into ice allow the molecules to be spaced farther apart, thus making them take more space, decreasing the overall density and making it float in the water. ]]> 2022-04-23 07:29:52 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154418390 raye https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154429986 Ice is less dense water. As water freezes, the molecules are unable to form hydrogen bonds making the H2O molecules further apart compared to other forms. as the temperature lowers, the water molecules would also have lesser energy. Therefore, this causes the overall density to be lower]]> 2022-04-23 08:02:32 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154429986 joei https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154448302 Stable hydrogen bonds of the water molecules in ice are kept further apart than water molecules of water. The ionic bonds in ice prevent ice from sinking. Ice is 9 percent less dense than water. Therefore since water is heavier, it displaces ice, causing it to float on top.

]]> 2022-04-23 08:51:03 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154448302 Zhi Yong https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154464617 Evem though it is known that solids are more dense than liquids, the reason why ice floats on water is because when water cools into ice, more H2O molecules are brought closer together which means that they are being forced into a smaller area while this is happening, the hydrogen bonds adjust to hold the negatively charged oxygen atoms apart preventing the ice from becoming any denser, as for water, its denisty decreases along with temperature. Hence, water is more dense than ice causing ice to float on water.]]> 2022-04-23 09:32:43 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154464617 Nickson Chia https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154486746 When water is cooled, the molecules want to form hydrogen bonds between the slight positive and negative charges however the same-charges repel each other which stops the molecules from getting too close. This results in the ice having a larger volume which leads to a lower density thus floating on water.]]> 2022-04-23 10:29:47 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154486746 Shaun https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154509548 Ice floats because it is less dense than water. Water has a density of 1.0 gm/cubic cm. The density of ice is 0.931 gm/cubic cm.

When water freezes into its solid form, the molecules can form more stable hydrogen bonds, locking them into positions. As the molecules are not moving, they cannot form as many hydrogen bonds as other water molecules in the liquid state. As such. the ice water molecules are not as close together as in liquid water and has a lower density.

]]> 2022-04-23 11:33:01 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154509548 izzah https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154552402 ice is less dense than water. since water is denser, it causes the ice to float to the top.

When water freezes to become ice, the positively-charged hydrogen bonds present will hold the negatively-charged oxygen atoms apart. this causes the ice to take up more space but prevents it from becoming any denser, therefore allowing it to float in water

]]> 2022-04-23 13:09:04 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154552402 Berwyn https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154606995 Ice floats on water because the density of ice is lesser than water. Ice is less dense as the hydrogen bonds between water molecules keeps them farther apart, preventing them from coming together and become dense. The hydrogen bonds and water molecules make hexagonal lattice structures.]]> 2022-04-23 14:45:13 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154606995 bernice https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154798465 Ice has a lower density than water. The concept of 'Anomalous expansion of water' explains this: Due to water's molecular structure, it behaves abnormally when it is cooled. When cooling, it contracts and its volume decreases till 4C. Water is the most dense at 4C. Beyond 4C it expands instead, thus increasing in volume (more than the initial volume) and the density decreases. Hence it is able to float on water. ]]> 2022-04-23 17:52:32 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154798465 Nicholas https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154986589 Water forms extensive hydrogen bonds between its own molecules and these bonds are constantly breaking and reforming. This is because when above 4oC, water molecules have high enough kinetic energy to overcome the hydrogen bonds. However, when temperature decreases below 4oC, the water molecules do not have as much kinetic energy to break these hydrogen bonds. This results in water forming an ordered hexagonal giant lattice structure which is less dense than the disordered structure of liquid water.

Reference:
TED. (23 Oct 2013).

Why does ice float in water?

| George Zaidan and Charles Morton

[Video]. YouTube. Available at: https://www.youtube.com/watch?v=UukRgqzk-KE. [Accessed 24 April 2022]

]]> 2022-04-24 02:46:11 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2154986589 Anson Lee https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155020664 A water molecule is a V-shaped molecule made up of one oxygen atom in the centre with a hydrogen atom on each side. The molecule is held together by covalent bonds, which is when two atoms share a pair of electrons. However, the oxygen atom pulls on these negatively-charged electrons much more strongly than the hydrogen atoms can. As a result, the electrons tend to hover closer to the oxygen atom than either of the hydrogen atoms. This leaves the molecule as a whole with a slight negative charge around the oxygen end, and a slight positive charge around the hydrogen end. Since opposites attract, the slight charges on different molecules interact with each other. These interactions are called hydrogen bonds. In liquid form, as the molecules move around, hydrogen bonds form and break over and over, and the molecules can slip past each other. However, as the water cools down, it starts to form into its crystal lattice structure. While the molecules want to form hydrogen bonds between the slight positive and negative charges, the same-charges repel each other, stopping the molecules from getting too close. The result is a structure that is slightly less dense than liquid water.

]]> 2022-04-24 04:26:29 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155020664 Hui Qian https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155055424 When water is cooled, the water molecules will form hydrogen bonds with each other which result in giant hexagonal structures of water with holes in them, and these structures are less dense than the structures in liquid water, hence ice will float in water. ]]> 2022-04-24 06:12:12 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155055424 yunqi https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155055533 when water freezes to form ice, the molecules can form more stable hydrogen bonds. as the molecules do not move, they are unable to form as many hydrogen bonds as liquid water molecules, making them to be spaced farther apart, making them take more space, decreasing the overall density and making it float in the water. the water molecules in ice take up about 9% more space than liquid water, which means ice is about 9% less dense than water.]]> 2022-04-24 06:12:34 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155055533 Shervon 02 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155061718 Ice is less dense than water
Density of water: 1gm/ cm3
Density of ice: 0.93gm/ cm3

The hydrogen bonds that form when water freezes into ice allow the molecules to be spaced farther apart, making them take more space, decreasing the overall density and making it float in the water.

]]> 2022-04-24 06:30:18 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155061718 Chiron https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155074924 Ice floats on water because it has a lower density than water. This is similar to why oil floats on water, because oil is less dense than water. ]]> 2022-04-24 07:01:15 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155074924 Cheryl https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155085013 Ice floats on water as it is less dense than water.

When water freezes into its solid form, its molecules are able to form more stable hydrogen bonds locking them into positions. Because the molecules are not moving, they're not able to form as many hydrogen bonds with other water molecules. This leads to ice water molecules not being as close together as in the case of liquid water, thus reducing its density.

Thus ice is less dense and able to float on water.

]]> 2022-04-24 07:25:23 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155085013 Lindsey https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155094849 Ice is less dense than water.

In liquid form, as the molecules move around, hydrogen bonds form and break continuously, and the molecules can slide past each other.

However, as the water cools down, it forms into its crystal lattice structure. The molecules want to form hydrogen bonds between the slight positive (from hydrogen atom) and negative charges (from oxygen atom), but the same charges repel each other, preventing the molecules from getting closer.

This molecular structure makes ice less dense than water, thus ice floats on water.

]]> 2022-04-24 07:50:15 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155094849 Jiaqi https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155097591 Water molecules have a slight negative charge at oxygen end and a slight positive charge at hydrogen end. Through ion ion interaction, the negative charge oxygen end of 1 water molecule is attracted to the positive end hydrogen end of another water molecules, forming hydrogen bonds.

Water molecules in liquid have a higher kinetic energy than those in solid, thus the hydrogen bonds formed break and form constantly in their disorderly arrangement. Low KE in solid state allow the water molecules to form a crystal lattice structure.

Comparing both structures, the crystal lattice structure provide a less dense structure, which explains why ice floats on water. ]]> 2022-04-24 07:57:15 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155097591 jing wen https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155140335 ice is less dense as compared to water.
when water is being freezed to form ice, the positively charged hydrogen bonds adjust to hold the negatively-charged oxygen atoms apart, which prevents bonds from forming so tightly, thus becoming less dense. as compared to water at room temperature, charges of H2O molecules repels each other, which prevents molecules to be tightly bonded, thus is slightly denser than ice, causing ice to float on water]]> 2022-04-24 09:32:41 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155140335 Malcolm 02 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155164827 Ice floats on water as it is less dense than water. Therefore rising to the surface. Ice is an anomaly because solids are usually denser than water. But due to hydrogen bonding, which holds the 2 hydeogen and 1 oxygen atom via covalent bonds, sharing electrons unequally. These bonds constantly form and break. But at lower temperatures, these bonds start to form more frequently than break. Forming a hexogonal structure crystal lattice structure which is less dense than the disorganised arrangement in water. Hence allowing the ice to float on water.]]> 2022-04-24 10:20:57 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155164827 Ai Xin https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155187649 Due to the unique nature of hydrogen bonding present in water molecules, weak hydrogen bonds attracts water molecules forming positively-charged hydrogen atoms and negatively-charged oxygen atoms. Weak hydrogen bonds will bind stronger on the negatively charged oxygen atoms apart forming a honeycomb shaped arrangement which takes up more space when freezing. Making ice lighter than water, so ice will float on top of water]]> 2022-04-24 11:08:55 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155187649 Clare https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155187940 Ice floats on water as it is less dense. Ice is formed when water is frozen into its solid form. In its solid form, its molecules form more stable hydrogen bonds and is not able to form as many hydrogen bonds with other water molecules thus, its molecules are are not as close together as compared to that in liquid water and it has a lower density causing it to float.]]> 2022-04-24 11:09:20 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155187940 Sheryl https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155190564 Hydrogen bonding is present in water, it forms extended networks between molecules, constantly forming and breaking. As temperature decreases, the kinetic energy of water molecules falls below the energy of hydrogen bonds. The hydrogen bonds then start to form more frequently than they break, forming ice. It's structure is less dense that the molecular structure of liquid water, thus floating on water.]]> 2022-04-24 11:14:46 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155190564 Malcolm Mak 03 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155192889 Ice floats on water for 1 simple reason, it is less dense than water.

But, the reasoning is much more than that. Water has Oxygen and Hydrogen. As from Chem I we have learned that hydrogen bonding is present in water, where the oxygen and hydrogen bonds are stronger than any other covalent bond along side hydrogen and fluorine plus hydrogen and nitrogen.

In it's liquid state, the hydrogen bonds can just disassociate and come back together. However, in it's solid state (ice) this disassociation and reassociation is affected due to the crystal lattice structure, where in the crystal lattice structure, the same like charges repel each other, stopping molecules and their
electrons from getting to close, causing a net increase in it's volume, reducing it's density. hence why ice is less dense than water.

https://www.sciencefocus.com/science/why-does-ice-float-on-water/]]> 2022-04-24 11:20:24 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155192889 Nerissa 03 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155273015 Ice is 9% less dense than water and since water is heavier, it displaces the lighter ice, causing the ice to float on the top. To be able to float, the ice must displace fluid with a weight equal to its own weight.]]> 2022-04-24 13:38:45 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155273015 Venice https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155363537 Ice has a lower density than water thus it is able to float on water. When water crystalizes to ice, the arrangement of the strong hydrogen bonds changes. This causes the molecules in ice to be kept further away from each other than compared to that of liquid water's, thus causing ice to be less dense than liquid water and float. ]]> 2022-04-24 16:02:34 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155363537 Abril Yeo 03 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155541717 When water is frozen into ice, the hydrogen bonds force the water molecules into a crystalline lattice structure that leaves larger spaces between the molecules, making ice less dense than water thus causing it to float.]]> 2022-04-24 21:10:11 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155541717 jaeyee https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155816831 ice floats on water because ice is less dense than water.
water molecules tend to form hydrogen bonds within one another. in warm water, molecules have high kinetic energy and are able to form and break hydrogen bonds very quickly.
however, when water gets below 4 °C, kinetic energy decreases and reduces movement, and the water molecules have insufficient energy to form and break hydrogen bonds so quickly and easily. hence, they will slowly form more hydrogen bonds with other water molecules to form hexagonal lattice structures, which have lots of empty space. this reduces the density and makes ice less dense than water, allowing it to float]]> 2022-04-25 03:00:09 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155816831 xuyue wxuyue21 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155867076 Ice floats because it is less dense than water.Water has a density of 1.0 gm/cubic cm.The density of ice is 0.931 gm/cubic cm.The hydrogen bonds that form when water freezes into ice allow the molecules to be spaced farther apart, making them take more space, decreasing the overall density and making it float in the water. The water molecules in ice take up about 9% more space than liquid water, which means ice is about 9% less dense than water.When water freezes into its solid form, the molecules can form more stable hydrogen bonds, locking them into positions. As the molecules are not moving, they cannot form as many hydrogen bonds as other water molecules. This leads to ice water molecules not being as close together as in liquid water, thus reducing its density.

]]> 2022-04-25 03:56:54 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155867076 yuxin https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155895891 ice floats on water as ice is less dense than water. density of ice is at 0.917g/cm^3 while density of water is at 1g/cm^3.
as water freezes to ice, kinetic energy decreases and reduces movement when freeze. as the water molecules have insufficient energy to form and break hydrogen bonds quickly, they will in turn form more bonds with other water molecules to form strong lattice structures. this reduces the density and makes ice less dense than water, causing ice to float on water.]]> 2022-04-25 04:33:34 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2155895891 Benjamin Benjaminlya https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156083182 Because ice is less dense than water. Water is a polar molecule with a slight negative charge at its oxygen atom and a slight positive charge at its hydrogen atoms. In water, the slightly positively charged hydrogen atoms of one water molecule forms hydrogen bonds with the slightly negatively charged oxygen atom of another water molecule. Like charges such as the positively charged hydrogen atoms of 2 different water molecules repel causing the polar water molecules in liquid water to slip pass one another. However, in ice the water molecules are fixed in a lattice structure preventing the molecules from slipping pass one another. The repulsion of the like charges would cause ice to take up more space making it less dense than water ]]> 2022-04-25 07:32:59 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156083182 Antje 03 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156102211 Hydrogen bonds keep the water molecules farther apart in ice, making ice less dense. Ice is about 9% less dense than water. Since the water is heavier, it displaces the lighter ice, causing the ice to float to the top.]]> 2022-04-25 07:47:53 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156102211 rou fu https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156106947 In water, the molecules are closely held together by weak, unstable hydrogen bonds but upon freezing, the hydrogen bonds stablize, arranging water molecules to be far apart from each other which causes ice to be about 9% less dense than water. Since ice is less dense, it will float when placed on a denser fluid such as water.]]> 2022-04-25 07:51:44 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156106947 Jeryl https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156179028 Ice has a lower density as compared to water allowing it to float on water. In liquid form, as the molecules move around, hydrogen bonds form and break over and over, and the molecules can slip past each other. However, as the water cools down, it starts to form into its crystal lattice structure. While the molecules want to form hydrogen bonds between the slight positive and negative charges, the same charges repel each other, stopping the molecules from getting too close. The result is a structure that is slightly less dense than liquid water.]]> 2022-04-25 08:51:00 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156179028 wern sheen 04 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156263973 below 4 degree celcius, the kinetic energy of water molecules is lesser than the energy of the hydrogen bonds. hydrogen bonds will form a hexagonal structure which is less dense than liquid water molecules in a disorganized arrangement. ice is less dense than water therefore it floats on water. water contracts and decreases in volume until it reaches 4 degree celcius. beyond 4 degree celcius, water will increase in volume and water will then be less dense.]]> 2022-04-25 10:08:54 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156263973 Hwee San 05 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156548709 Water has a density of 0.9998 g/cm³. Ice has a density of 0.917 g/cm³ at 0 °C. Liquid water is naturally denser than ice as the molecular structure of the two states are vastly different. Ice has a molecule structure formation in a specific way that pushes the molecules further apart from one another, resulting in a lower density. Hence ice floats on water.

]]> 2022-04-25 13:34:31 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156548709 Ke Yi https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156665369 The hydrogen bonds that form when water freezes into ice allow the molecules to be spaced farther apart, making them take more space, decreasing the density and thus making ice float in water.

Reference:
Admin (2019). Why does ice floats on water? - BYJU’S Q&A. [online] BYJU’S. Available at: https://byjus.com/questions/why-does-ice-floats-on-water/ [Accessed 25 Apr. 2022].

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]]> 2022-04-25 14:32:20 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156665369 jinrong https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156692538 An object that is less dense than water will float. But how can ice, a solid, be less dense than water?
Since water is denser, it displaces the "lighter" ice, causing the ice to float. This is because water consists of +charged hydrogen atoms and -charged oxygen atoms. When the water cools, the hydrogen bonds compensate to hold the -charged oxygen atoms apart, which prevents the ice from becoming denser. ]]> 2022-04-25 14:45:28 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156692538 Syakir 01 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156697147 Ice floats on water as it is less dense. When water freezes, molecules will form more stable hydrogen bonds. This leads to the molecules to be locked in position and water molecules will be spaced further apart. Since density = mass/volume and the volume increasing, this results in ice having a lower density, and thus floats on water.]]> 2022-04-25 14:47:49 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156697147 li lian https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156717585 ice floats on water because it is less dense than water by 9%. this is because when water freezes, the positively-charged hydrogen bonds adjust to hold the negatively-charged oxygen atoms apart, which prevents the ice from becoming any denser although it takes up more space. this makes ice less dense compared to water.]]> 2022-04-25 14:57:32 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156717585 ilya 04 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156779315 Ice floats on water due to its lower density. During the process of freezing from water to ice, the hydrogen bonds changes. Thus, causing the molecules in ice to be further away as compared to the molecules in liquid water. Therefore this causes ice to be less dense and float ]]> 2022-04-25 15:26:21 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156779315 Alicia https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156816055 Density is mass over volume. The density of ice is lower than water thus it floats on water. When you freeze water, it becomes less dense due to the strong hydrogen bonds. These hydrogen molecule are spaced apart, thus decreasing the overall density and makes it float on water.]]> 2022-04-25 15:44:44 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156816055 nishanthi https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156821985 Since ice has a lower density than water, it floats on water. Water behaves abnormally due to its molecular structure. This concept is known as the 'anomalous expansion of water'. When water is cooled, it contracts and reduces in volume till 4 degree celsius. After this point, its volume increases and becomes more than the initial volume. Therefore, its density decreases, enabling ice to float on water.

https://www.youtube.com/watch?v=oZOEFYogKn8]]> 2022-04-25 15:47:39 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156821985 geraldine 05 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156908693 Ice floats on water because it is less dense than water.

Density is defined as mass per unit volume of a substance. By saying ice is less dense, it has a larger volume as compared to water. Both ice and water are made up of 2 hydrogen and 1 oxygen atoms bonded covalently. However, when the temperature is lowered to the freezing point of water, the kinetic energy of the water molecules slowly decreases and more hydrogen bonds are being formed. This results in a crystal lattice structure, decreasing the overall density of ice, making it float on water.]]> 2022-04-25 16:30:50 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2156908693 Anderson 05 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2157400045 When water freezes in its solid form, the molecules can form more stable hydrogen bonds, locking them in position. Because the molecules don't move, they can't form as many hydrogen bonds as other water molecules. This leads to the fact that the molecules of ice water are not as close to each other as in liquid water, which reduces its density.. Liquids have a lower density than solids. Water is also a liquid, so it should also have a lower density than that of a solid, which is ice. Although ice is hard, it has a checkered structure, so there are many empty spaces between its particles. These spaces are larger than compared to the spaces present between the water particles. Thus, for a given mass of water, the volume of ice is greater than the volume of water, hence the density of ice is less than the density of water. A substance with a lower density than water can float on water. That's why ice floats on water.]]> 2022-04-25 21:59:46 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2157400045 Pearlyn https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2157786384 Ice floats on water as it is less dense than water. It is able to do so as Water consists of positively-charged hydrogen atoms and negatively-charged oxygen atoms. When water cools, the hydrogen bonds adjust to hold the negatively-charged oxygen atoms apart, which prevents the ice from becoming any denser. So for water density actually decreases along with a decrease in temperature - causing ice to be less dense than water, hence floating on water.

]]> 2022-04-26 03:45:24 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2157786384 Xin Tong 04 ngxintongsg https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2157787169 Ice is about 9% less dense than water during freezing, the hydrogen bonds between the water molecules change and the water molecules move away from each other, resulting in it becoming less dense than liquid water and causing it to float.

]]> 2022-04-26 03:46:16 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2157787169 Lim Jun Wei https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2157797322 when water is frozen to form ice the structure of the hydrogen and oxygen molecues changes. The molecues will become tightly packed and closed to each other as there is lesser energy to overcome the intermolecular forces of attraction. as a result the volume of 1kg of ice will be lower than that of 1 kg of water. as density is represented as mass / volume. when the mass of ice remains unchanged the volume of ice will decrease when frozen from water . thus it has a lower density than water and will float on water]]> 2022-04-26 03:56:53 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2157797322 lieng https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2157921745 in liquid state, water molecules closely attached by weak hydrogen bonds. the space between the molecules are small. in solid state (ice), water molecules are stable and are held by stronger hydrogen bonds, because of that, it is arranged further apart and there are more spaces in between each molecule, making it denser than water and floats on the surface]]> 2022-04-26 05:57:41 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2157921745 Bavanika https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2157953595 ice floats on the water because it is less dense than water. as water molecules in liquid state, the hydrogen bond is not strong enough and will break easily which have less space in between the molecules. in solid state, the hydrogen bond become strong and stable which have more space in between the molecules, making it denser than water and thus floating on the surface of the water. ]]> 2022-04-26 06:25:31 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2157953595 Don https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2158743907 The water molecules gradually lose energy and forms a stable lattice structure when it is cooled. The hydrogen bonds keep the water molecules far apart in ice, making it less dense than water.

]]> 2022-04-26 15:25:29 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2158743907 Faith 02 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2159716749 ice floats on water due to the difference in density between the two, ice being less dense. The chemical structure of water is H20. When water freezes into ice, stable hydrogen bonds are formed to hold the negatively charged oxygen molecule , which results in a rigid lattice that increases the space between molecules. This creates more space which are larger than compared to the spaces present between the particles of water. Thus, for a given mass of water, the volume of ice is greater than that of water]]> 2022-04-27 04:36:16 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2159716749 karlynn 02 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2159855685 Ice float on water as water expand when they freeze making them less dense . This is because hydrogen bond that form when water freeze also allow the molecules to be spaced further.]]> 2022-04-27 06:34:56 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2159855685 Anastasia 02 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2159963967 Every water molecule is made up of two hydrogen atoms bonded to one oxygen atom. Water has a special kind of interaction between molecules which is called the hydrogen bond. In a single drop of water, hydrogen bonds form extended networks between molecules and these bonds are constantly breaking and reforming. When the water freeze (temperature falls below 4 degree celsius), the kinetic energy of the water molecules falls below the energy of the hydrogen bonds, hence hydrogen bonds form more frequently than they break. Since hydrogen bonds form the structure of the ice cubes, it is less dense than liquid and therefore they are able to float on water. ]]> 2022-04-27 07:57:10 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2159963967 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160239461 this is because of the different density as well as molecular structure. Ice is less dense compared to water. Ice water molecules are far apart from one another compared to water. Water molecules are closely held together by weak hydrogen bonds. ]]> 2022-04-27 12:05:34 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160239461 chloe 01 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160289922 ice floats on water as it is less dense than water. When water is frozen, hydrogen bonds are formed, allowing for the molecules to be spread out further, taking up more space, thus decreasing its density, allowing for it to float on water.

]]> 2022-04-27 12:41:55 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160289922 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160342661 Even though solids are said to be denser than liquids, however it does not apply to water because molecules in water are affected by a phenomenon known as hydrogen bonding. The density of ice is 0.917 g/cm³ while the density of water is 1 g/cm³Since ice has a lower density than water, ice will float in water.

]]> 2022-04-27 13:13:36 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160342661 keaya 01 :) https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160422350 ice floats on water as ice is less dense than water. when water is frozen the hydrogen bonds adjust to hold the negatively-charged oxygen atoms apart, which prevents the ice from becoming any denser. They form these structures to keep the negatively charged oxygen molecules apart resulting in a lot of empty space. ince D= M/V, more empty space results in an increase in the volume and according to the formula, density is inversely proportional to volume. So an increase in volume will result in a decrease in density yay]]> 2022-04-27 13:56:12 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160422350 Sean lim 02 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160452386 Usually particles in solid states are danser then their liquid counterpart, however in the case of water, its crystalline structure actually causes it to become less dense in its solid state. this is mainly directed by the shape, polarity, and hydrogen bonding of the water molecules. ]]> 2022-04-27 14:12:08 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160452386 jolene 01 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160472980 Water is made up of 2 hydrogen and 1 oxygen. When it cools to form ice, they form more hydrogen bonds with other water molecules into a hexagonal lattice structure to keep negatively charged oxygen molecules apart, leaving a lot of space in between, which causes ice to be less dense than water and float]]> 2022-04-27 14:22:13 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160472980 Hazwan 01 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160475492 Ice is less dense the water. After freezing the water, hydrogen bonds causes the particles to be in a fix position and spaced far apart causing it to have a lower density than water where some particles are able to move around.]]> 2022-04-27 14:23:35 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160475492 kahyin 02 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160524450 When water freezes into ice, hydrogen bonds form, allowing the molecules to be spaced wider apart & take up more space. This lowers the overall density & allows it to float on water.]]> 2022-04-27 14:48:15 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160524450 zhi wei 01 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160527068 Ice is less dense than water, thus the water would displace the ice due to its higher density, causing the ice to float on the water.]]> 2022-04-27 14:49:31 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160527068 beatrice 02 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160531539 ice floats in water as it is less dense than water.
water has positively charged hydrogen atoms and negatively charged oxygen atoms.
as the water begins to freeze, the hydrogen bonds will start to force the negatively charged oxygen atoms apart, forming a honeycomb structure, which leaves many empty spaces between them. Thus giving it a less dense structure and causing it to float in water.]]> 2022-04-27 14:51:54 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160531539 Wei Lun 02 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160533312 Water contains positively-charged hydrogen atoms and negatively-charged oxygen atoms. When water freezes, the hydrogen atoms adjust to hold the negatively-charged oxygen atoms apart, thus causing the ice to have more empty spaces than water. This empty spaces are filled with air which is less dense than water, therefore resulting in ice to be less dense than water and being able to float on water.]]> 2022-04-27 14:52:56 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160533312 TAN RUI EN 02 https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160540706 1. Liquid is freeze(-18 degrees.c) to form solid, the temperature decreases, kinetic energy of the water molecule decreases.
2. As temperature fall below 4 degree.c., kinetic enegry > energy of hydrogen bonds. Result is more Hydrogen bond more than they break.
3. The order, hexagonal structure is less dense than the disordered structure of liquid water. ]]> 2022-04-27 14:57:03 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160540706 Natalie https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160784176 Ice floats because it is less dense than water. Each water molecule consists of one oxygen atom and two hydrogen atoms, which are covalently bonded. Water molecules are attracted to each other by weaker hydrogen bonds. As water temperature decreases, the weaker hydrogen bonds begin to hold the negatively-charged oxygen atoms apart, forming a rigid crystal structure (ice). The water molecules in ice take up more space than liquid water, which means ice is less dense than water. Thus, ice floats in water.]]> 2022-04-27 17:12:52 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2160784176 insyirah https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2161188280 ice floats on water as it is less dense compared to water. the water molecule is made up of one oxygen atom and two hydrogen atoms. the hydrogen bonds in the atoms will force the negatively charged oxygen atom apart. this creates a less dense structure causing the ice to float]]> 2022-04-27 23:03:14 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2161188280 rasyiqah https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2161281493 ice floats in water as it is less dense than water, meaning that water will displace the ice, causing it to float. this is because water contains negatively-charged oxygen atoms and hydrogen bonds with other atoms. when the temperature decreases and water is changing from solid state to liquid state, the hydrogen bonds of water needs to force the negatively-charged oxygen atoms apart from each other. hence this prevents ice from being denser since there are many empty spaces of air left in the structure.]]> 2022-04-28 00:44:49 UTC https://padlet.com/matthew_koh/qkc2azp1krgs60lr/wish/2161281493