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GCSE
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More cards in this set
Card 6
Front
What is hard water?
Back
Card 7
Front
What is the difference between scale and scum
Back
Card 8
Front
Water can be softened by removing the salts that produce scale and scum. How?
Back
Card 9
Front
What is the difference between pure water and water that is fit to drink
Back
See full card set