https://padlet.com/wanzai/lo71wm2ovnrchtvc SEM 1 2020/21 8M1DS38 en-us 2020-10-26 02:45:59 UTC 2024-11-30 12:25:59 UTC hello@padlet.com wanzai https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860276718 Tell me_Wzai]]> 2020-10-26 02:48:59 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860276718 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860482948 1. van der Waals Force
2. Metallic Bond
3. Ionic Bond
4. Covalent Bond

]]> 2020-10-26 05:09:32 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860482948 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860500883 1. Dative bond

]]> 2020-10-26 05:20:05 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860500883 wanzai https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860502091 2020-10-26 05:20:51 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860502091 wanzai https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860502787 2020-10-26 05:21:17 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860502787 pruvanesh https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860502889 Types of Bond(Ruvanesh.P)
1. Ionic Bond
2. Covalent Bond
3. Dative Bond
4. van der Waals forces
5. Metallic Bond]]> 2020-10-26 05:21:22 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860502889 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860504425 Because ice is less dense than water]]> 2020-10-26 05:22:18 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860504425 pruvanesh https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860513953 1. Solid phase is denser than the liquid phase.
Why ice floats in water?
Smaller volume will result a higher density thus water has a higher density than ice.

]]> 2020-10-26 05:27:55 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860513953 pruvanesh https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860517875 sp
sp2
sp3
sp3d
sp3d2]]> 2020-10-26 05:30:04 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860517875 pruvanesh https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860520487 Metallic bond can be defined as the electrostatic force between the positively charged metal ions and the ‘sea’ of delocalised electrons.]]> 2020-10-26 05:31:44 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860520487 pruvanesh https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860524734 Lewis structure show the bonding between atoms of a molecule, and the lone pairs of electrons that may exist in the molecule.]]> 2020-10-26 05:34:23 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860524734 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860569104 -ionic bond
-covalent bond
-hydrogen bonds
-van der waals interaction

Amir :)]]> 2020-10-26 06:00:22 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860569104 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860571867 Lewis structure extend the concept of the electron dot diagram by adding lines between atoms to represent shared pairs in a chemical bond

Amir :)]]> 2020-10-26 06:02:01 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860571867 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860576615 Ice floats on water

Why? 
It is because in ice, each water molecule is tetrahedrally surrounded by four other water molecules with hydrogen bonds

Amir :)]]> 2020-10-26 06:04:32 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860576615 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860578345  Metallic bonding is the strong electrostatic force of attraction between the metal ions and the delocalised electrons.]]> 2020-10-26 06:05:30 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860578345 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860578440 Lewis structure also known as Lewis dot diagram,Lewis dot formulas,Lewis dot structures, electron dot structures or Lewis electron dot structures

Adhwa]]> 2020-10-26 06:05:33 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860578440 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860578991 Metallic bonding is the strong electrostatic force of attraction between the metal ions and the delocalised electrons.]]> 2020-10-26 06:05:55 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860578991 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860580135 Metallic bonding is type of chemical bonding that rises from electrostatic attractive force between conduction electrons and positively charged metal ions

Amir :)]]> 2020-10-26 06:06:35 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860580135 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860581014 -ionic bond
-covalent bond
-dative bond]]> 2020-10-26 06:07:04 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860581014 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860581097 The five shapes of hybridization,linear, trigonal planar, tetrahedral, trigonal bipyramidal, and octahedral. ]]> 2020-10-26 06:07:06 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860581097 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860582023 lewis structure help visualize the valence electrons of atom and moecule, whether they exist as lone pair or bond pair
_akmal]]> 2020-10-26 06:07:35 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860582023 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860584125 There is five basic shape of hybridisation which is linear ,trigonal planar, tetrahedral, trigonal bipyramidal,  and octahedral

Amir :)]]> 2020-10-26 06:08:42 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860584125 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860584298 -ionic bond 
-Covalent Bond 
-Dative Bond
#dayang]]> 2020-10-26 06:08:48 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860584298 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860584699 -dative bond
-ionic bond
-metallic bond]]> 2020-10-26 06:08:59 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860584699 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860586366 -ionic bonding
-covalent bonding
-metallic bonding
_akmal]]> 2020-10-26 06:09:47 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860586366 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860586857 ionic bond
Dative bond
Covalent bond
Metallic bond]]> 2020-10-26 06:10:01 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860586857 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860588549 Water is made upof 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.For water the density actually decreases along with a decrease in temperature  causing ice to be less dense than water]]> 2020-10-26 06:10:47 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860588549 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860589876 Hydrogen bonding makes ice less dense than liquid water.The lattice structures of ice makes it less dense than freely flowing molecules of liquid water,enabling it to float on water]]> 2020-10-26 06:11:27 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860589876 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860591136 Lewis structure is also called electron-dot structures or electron-dot diagrams, are diagrams that show the bonding between atoms of a molecule, and the lone pairs of electrons that may exist in the molecule. A lewis structure can be drawn for any covalently-bonded molecules, as well as coordination compounds.]]> 2020-10-26 06:12:04 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860591136 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860592262 Dative bond,ionic bond, covalent bond, hydrogen bonds, and van der Waals interactions]]> 2020-10-26 06:12:39 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860592262 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860593713 Metallic bond can be defined as the electrostatic force between the positively charged metal ions and the sea of delocalized electron]]> 2020-10-26 06:13:20 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860593713 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860595502 Lewis Structure is a very simplified representation of the valence shell electrons in a molecule. It is used to show how the electrons are arranged around individual atoms in a molecule. Electrons are shown as "dots" or for bonding electrons as a line between the two atoms.]]> 2020-10-26 06:14:11 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860595502 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860598003 -ionic bond
-covalent bond
-dative bond
-hydrogen bonds
-Van der Waals interactions

]]> 2020-10-26 06:15:30 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860598003 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860598508 Lewis structure are diagrams that show the bonding between atoms of a molecule, and the lone pairs of electrons that may exist in the molecule. A Lewis structure can be drawn for any covalently-bonded molecule.

]]> 2020-10-26 06:15:46 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860598508 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860602978 5 types of hibridization(shape)
1 linear
2 trigonal planar
3 tetrahedral
4 trigonal bypiramidal
5 octahedral]]> 2020-10-26 06:18:05 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860602978 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860604293 -ionic bonding
-covalent bonding
-dative covalent bonding
-hydrogen bonding
-metallic bonding
-IMF ]]> 2020-10-26 06:18:46 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860604293 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860604750 Lewis structures are a convenient way of showing the number of valence electrons and how these electrons are involved in the process of bond formation.

Kai Sheng]]> 2020-10-26 06:18:59 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860604750 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860604859 Basic shape of hybridisation
-Linear
-Trigonal planar 
-Tetrahedral
-Trigonal bipyramid
-Octahedral
#dayang]]> 2020-10-26 06:19:03 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860604859 wanzai https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860612020 2020-10-26 06:22:39 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860612020 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860613993 When atoms react to form chemical bonds, only the electrons in the outermost or valence shell are involved. Thus, only the electronic configuration of valence shell is important in bond formation.

In order to place emphasis on the elcetrons on the outermost shell, we use special symbol known as Lewis Structure or  Lewis Diagram (also called electron-dot structure).

-Xinyi Ong-]]> 2020-10-26 06:23:33 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860613993 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860616204 Metallic bonding is the strong electrostatic force of attraction between the metal ions and the delocalised electrons.]]> 2020-10-26 06:24:33 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860616204 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860618438 ionic bonding?
Ionic bonding, also called electrovalent bond is a type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound.

]]> 2020-10-26 06:25:30 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860618438 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860618979 covalent bond
ionic bond
metallic bonds
dipole–dipole interactions
London dispersion force 
hydrogen bonding]]> 2020-10-26 06:25:44 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860618979 wanzai https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860621509 2020-10-26 06:26:44 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860621509 wanzai https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860622132 2020-10-26 06:27:01 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860622132 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860624524 5 basic shapes of hybridization 
-linear (sp)
-trigonal planar (sp2)
-tetrahedral (sp3)
-trigonal bipyramidal (sp3d)
-octahedral (sp3d2)

]]> 2020-10-26 06:28:04 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860624524 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860627773 1. Ionic (electrovalent) bonds
-is the electrostatic attraction between two oppositely charged ions.
2. Covalent bonds
-the atoms share electrons so that each atom achieves noble gas configuration.
3.Coordinate bond / Dative bond
- formed when both electrons in the covalent bond are supplied by one of the bonded atoms.
4. Hydrogen bond
-is a strong permanent dipole-dipole attraction between molecules which contain a hydrogen atom covalently bonded to a small and highly electronegative atom, such as fluorine, oxygen or nitrogen.
5.Van der Waals forces
--> dipole-dipole forces: attractive forces exist between neutral polar molecule
--> London forces: force of attraction between temporary dipole and induced dipole
6.Metallic bond
-electrostatic attraction between the positively charged metal ions and the sea of delocalised electrons.

-Xinyi Ong-]]> 2020-10-26 06:29:33 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860627773 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860637737 covalent bonding?
A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms. ]]> 2020-10-26 06:34:15 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860637737 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860642945 Density of a substance is its mass per unit volume.
Generally, a substance in solid phase is denser than the liquid phase.
However, due to the presence of hydrogen bond, the water molecules cooled in solid are arranged into tetrahedral arrangement (an open structure) which has greater volume than liquid water, and thus has a lower density than liquid water. Therefore, the ice float on the water.]]> 2020-10-26 06:36:28 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860642945 wanzai https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860661881 2020-10-26 06:44:30 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860661881 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860665377 Metallic bonding is a type of chemical bonding that rises from the electrostatic attractive force between conduction electrons (in the form of an electron cloud of delocalized electrons) and positively charged metal ions. It may be described as the sharing of free electrons among a structure of positively charged ions (cations).]]> 2020-10-26 06:46:16 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860665377 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860672731 Water is one of the few substances that is less dence as a solid than it is as a liquid. In ice, each water molecule is surrounded tetrahedrally by four other water molecules linked through hydrogen bonding. The water molecules arrange themselves in such a way as to maximise the amount of hydrogen bonding between them. This leaves a relatively large amount of space between them and gives rise to an "open" structure. This "open" structure of ice accounts for the fact that ice is less dense than water.

-Xinyi Ong-

]]> 2020-10-26 06:49:32 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860672731 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860679102 There are 5 common types of hybrid orbitals:
1) sp hybrid orbital (linear arrangement)
2) sp² hybrid orbital (trigonal planar arrangement)
3) sp³ hybrid orbital (tetrahedral arrangement)
4) sp³d hybrid orbital (trigonal bipyramidal arrangement)
5) sp³d² hybrid orbital (octahedral arrangement)]]> 2020-10-26 06:52:41 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860679102 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860688011 dative covalent bond?
dative covalent bond is a covalent bond (a shared pair of electrons) in which both electrons come from the same atom.]]> 2020-10-26 06:56:46 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860688011 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860692106 In metals, the valence electron are no longer associated with a particular metal atom but but are free to move throughout the solid piece of metal.
The electrons are said to be delocalised. With valence electron delocalised, the metal atoms are effectively ionised.
The metallic bond is defined as the electrostatic attraction between the positively charged metal ions and the sea of delocalised electrons.

-Xinyi Ong-]]> 2020-10-26 06:58:32 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860692106 wanzai https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860700224 2020-10-26 07:02:34 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860700224 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860703949 1. sp³ (tetrahedral arrangement)
2. sp² (trigonal planar arrangement)
3. sp (linear arrangement)
4. sp³d (trigonal bipyramidal arrangemnet)
5. sp³d² (octahedral arrangement)

-Xinyi Ong-]]> 2020-10-26 07:04:12 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860703949 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860719348 hydrogen bond?
hydrogeng bond is the interaction involving a hydrogen atom located between a pair of other atoms having a high affinity for electrons; such a bond is weaker than an ionic bond or covalent bond but stronger than van der Waals forces.]]> 2020-10-26 07:11:16 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860719348 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860737238 irdina]]> 2020-10-26 07:19:18 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860737238 wanzai https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860774808 2020-10-26 07:36:06 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860774808 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860789675 Hybridisation is a process of mixing atomic orbitals in an atom to form a new set of hybrid orbitals

SHAROL]]> 2020-10-26 07:42:15 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860789675 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860798905 The existence of metallic bond in metals accounts for physical properties of metals
1. malleability
2.ductility
3.electrical conductivity
4.thermal conductivity

_SHAROL]]> 2020-10-26 07:46:14 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/860798905 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/862077928 A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compound. The bond may result from the electrostatic force of attraction between oppositely charged ions as in ionic bonds or through the sharing of electrons as in covalent bond. ]]> 2020-10-26 15:05:26 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/862077928 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/862098852 There are four types of bonds or interactions which is ionic bonds, covalent bonds, hydrogen bonds, and van der Waals interactions. ]]> 2020-10-26 15:09:31 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/862098852 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/862116163 Ice floats on water because it is less dense than water. Density is defined as mass per unit volume of a substance. 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.]]> 2020-10-26 15:12:52 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/862116163 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/862125981 Metallic bonding is the strong electrostatic force of attraction between the metal ions and the delocalised electrons.]]> 2020-10-26 15:14:48 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/862125981 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/862133045 The five basic shapes of hybridisation are linear, trigonal planar, tetrahedral, trigonal bipyramidal, and octahedral.]]> 2020-10-26 15:16:10 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/862133045 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/862145874 2020-10-26 15:18:39 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/862145874 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/862214964 - hydrogen bond
- ionic bond
-covalent bond
-dative bond]]> 2020-10-26 15:32:20 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/862214964 https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/864317665 Steps to draw lewis structure
-khairina-]]> 2020-10-27 03:55:16 UTC https://padlet.com/wanzai/lo71wm2ovnrchtvc/wish/864317665