Chemistry- Hard Water 0.0 / 5 ? ChemistryHard waterGCSEEdexcel Created by: Abbs ReynoldsCreated on: 21-03-14 21:52 What does hard water make? Scum 1 of 8 What do you have to do to form a lather with hard water? Waste a lot of soap 2 of 8 What is hardness caused by? Calcuim and magnesium ions 3 of 8 How can temperary hardness be removed? Boiling 4 of 8 What is temperary hardness caused by? Calcium hydrogencarbonate 5 of 8 What is perminant hardness caused by? Calcium sulfate 6 of 8 What is the way both types of hardness can be removed? Ion exchange resin 7 of 8 How does an ion exchange resin work? The resin contains lots of sodium ions(or hydrogen ions) and 'exchanged' them for calcium or mahnesium ions in the water that runs through them. 8 of 8
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