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The chemical formula for water is H2O , meaning that ii contains two hydrogen atoms bonded to one atom, where the oxygen is slightly negatively charged and that the hydrogens are slightly positively charged. This is called polarity and is the key concept behind properties of water.

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The water molecules will hold on together if the temperature or the conditions are just perfect, this helps the paper clip stay on the water .This means that the Paper clip is being help up by the surface tension.

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This means that neighbouring water molecules can have the slightly positive hydrogen from one molecule attracted to the slightly negative oxygen on another.

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Salt will not dissolve in oil because oil is not polar. This is because it dissolves by forming hydrogen bonds with water.

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Salt will not dissolve in oil because oil is not polar. This is because it dissolves by forming hydrogen bonds with water.

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this is a penguin waking on water

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Opposite like molecules in water,(H2o) attract which makes it able to support a specific amount of weight on its surface.

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This is called polarity and is the key concept behind the properties of water.

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Each water molecule has polar sides and at the top of the water the water connects more with each other than the air . If you throw something it will probably sink down to the bottom , but if you gently set it the object will probably float.

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Why does a needle sink if you throw it in but if you place it, the needle floats? Well, this is because the needle is denser than the water so it sinks. But when you place it, the needle it is held up by the surface tension.

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Due to water acting like a magnet, water molecules can also attract particles with areas of opposing electrical charges.   An example is the dissolving of salt in water.  Table salt forms a crystal structure made up of sodium (Na) atoms and chloride (Cl) atoms.

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this looks weird

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Hydrogen bonds is how water sticks together with high surface tension and to move easily by capillary action.

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Solid water (ice) is less dense than liquid water  

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Solid water (ice) is less dense than liquid water  

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Ice floats on water and that lakes freeze from the top down to the bottom since water freezes at 0℃This means that large bodies of water don't get cold deeper down as fast as they might if ice sank, which helps organisms survive in ponds over winter.

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This is because the needle is denser than water so wants to sink but if you held it up by the surface tension of the water and it will float.The water does not overflow because it stick to each other form the water.

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This just means that ice floats on water and that lakes freeze from the top down to the bottom since water freezes at 0℃.

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This just means that ice floats on water and that lakes freeze from the top down to the bottom since water freezes at 0℃.

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Nathan Boessler                     But why 

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Nathan Boessler                     But why 

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A substance will dissolve in water if it is polar. This is because it dissolves by forming hydrogen bonds with the water. Oil is not polar, which is why it will not dissolve.

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Our cells need to be filled with water to work properly because some of the important chemicals inside our cells only function when dissolved in water.

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it is capable of dissolving so many substances. Due to water acting like a magnet, water molecules can also attract particles with areas of opposing electrical charges.Due to water acting like a magnet, water molecules can also attract particles with areas of opposing electrical charges.

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Oh yea

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Due to water acting like a magnet, water molecules can also attract particles with areas of opposing electrical charges. Our cells need to be filled with water to work properly because some of the important chemicals (enzymes) inside our cells only function when dissolved in water.

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This is when water acts like a magnet water molecules can attract particles that have opposite electrical charges. An example of this is dissolving salt in water.

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fish and other pond-life would be affected if lakes and ponds froze from the bottom upwards - the layer of frozen water at the top of the pond provides some insulation and prevents the rest of the water getting cold as quickly.

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Water molecules have polar opposite charges which means they are highly attracted to each other. Water is much more attracted to itself then the air.  It seems like water can  form a skin on the surface . If you put a needle on the surface of a bowl of water it floats  but if you throw it, it will sink.  This means the surface of water does not want to break. If you fill a cup to the brim , as the surface of the water will hold together and resisting a spill

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Surface Tension

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AWESOME CRYSTAL LAKE
the layer of frozen water at the top of the pond provides some insulation and prevents the rest of the water getting cold as quickly.

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Although this picture is likely not real, it does show the cohesiveness (the "stickiness") of water molecules to each other.