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Card 6
Front
What do you need to do to get a lather with hard soap?
Back
Card 7
Front
Why is hard water more expensive?
Back
Card 8
Front
When hard water is heated, what does it form?
Back
Card 9
Front
What is scale mostly made out of?
Back
Card 10
Front
What does scale do that makes it an expensive drawback?
Back
Card 11
Front
What does rain falling on some types of rock do?
Back
Card 12
Front
Give two examples of soluble compounds that are dissolved by water
Back
Card 13
Front
What does hard water contain that makes it good for you?
Back
Card 14
Front
What does drinking hard water also decrease your risk of?
Back
Card 15
Front
What is temporary hardness caused by?
Back
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