AQA GCSE unit 3 Chemistry - Water AQA GCSE Chemistry - Revision for the third topic of unit 3, water 4.0 / 5 based on 5 ratings ? ChemistryWater hardness and solubilityGCSEAll boards Created by: LeslieCreated on: 16-05-12 14:37 How does the water cycle produce fresh water? When the water evapourates water vapour is seperated from salts and ions 1 of 15 Where is dissolved oxygen found? In water 2 of 15 When water hits rocks some ________ _________ are dissolved Ionic compounds 3 of 15 What are the two main processes of the water cycle? Evapouration and condensation 4 of 15 The solubility of gases _________ as temperature increases Decreases 5 of 15 The solubility of gases __________ as temperature decreases Increases 6 of 15 The solubility of gases ____________ as pressure increases Increases 7 of 15 The solubility of gases ____________ as pressure decreases Decreases 8 of 15 Calcium is good for our health, why? Stronger teeth and bones 9 of 15 Scum is formed when... Soap enters water 10 of 15 Washing soda can remove hardness from water, what does it contain? Sodium carbonate 11 of 15 What else is added to water to kill microorganisms? Chlorine 12 of 15 Why should drinking water contain as little harmful substances as possible? So it's safe to drink 13 of 15 What PH must drinking water be? Neutral 14 of 15 What is de-ionisation? The romoval of ions from water 15 of 15
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