Hard Water - C3 - AQA 1.0 / 5 based on 1 rating ? ChemistryWater hardness and solubilityGCSEAQA Created by: LizzieCreated on: 09-05-13 00:16 523146 Across 1. Formed when hard water reacts with soap (4) 4. What causes temporary hardness ? (8, 9) 5. Formed when hard water is thermally decomposed (5) Down 2. An ion which causes hard water ? (7) 3. A type of rock which contains compounds like magnesium sulfate (9) 5. Something that can be added to hard water to soften it (6, 9) 6. Something which calcium ions are good for (5)
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