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Water Cycle - Water as a resource, hard & soft water, colloids, emulsions, salt solubility & water of crystallisation (Suitable for AQA, Edexcel and OCR GCSE chemistry students) 1. Water cycle, potable water, water treatment, pollution, ion tests 2. Colloids - sols, foams, soaps, detergents and emulsions 3. Hard and soft water - causes and treatment 4. Gas and salt solubility in water and solubility curves 5. Determination and calculation of water of crystallisation Find your GCSE science course for more help links to revision notes This is a BIG website, you need to take time to explore it Use your mobile phone or ipad etc. in 'landscape' mode These 'Extra Aqueous Chemistry' sections listed below are now split into five sections and renumbered so use the new index above 1. What happens to water on the Earth's Surface? 1a The Water Cycle and Water as a Resource 1b Water Treatment and pollution - domestic and industrial contexts 1c Hard and Soft Water 2a. How well do different gases and solids dissolve in water? 2b. Solubility curves for selected salts 3. Water of crystallisation calculations
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