Revise Water
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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Is water a compound or an element? | A compound.
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What elements make water? | Hydrogen and Oxygen.
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How can you test a substance to see if it is water? | Copper sulphate anhydrous will turn blue in the presence of water.
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What is the freezing point of water? | 0°C
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What is the boiling point of water? | 100°C
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What is the density of water? | 1g/cm2
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Why does ice float on water? | Ice is less dense than water.
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Water is a good solvent. Why is this important? | We can use it to dissolve many different chemicals in it to make different compounds
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What is the purest form of water? | Distilled, deionised water.
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What is hard water? | Hard water is water that does not easily form a lather with sop.
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What is soft water? | Soft water forms a lather easily with water.
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What compounds are found in hard water? | Calcium carbonate. Calcium Hydrogen Carbonate,
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When you boil water what do you remove? | Calcium Hydrogen carbonate.
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How does an ion exchange resin get rid of hardness in water? | Using an anion exchange resin it replaces the calcium ions with sodium ions.
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Created by:
SC Dave
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