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Card 6

Front

What do you need to do to get a lather with hard soap?

Back

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Card 7

Front

Why is hard water more expensive?

Back

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Card 8

Front

When hard water is heated, what does it form?

Back

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Card 9

Front

What is scale mostly made out of?

Back

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Card 10

Front

What does scale do that makes it an expensive drawback?

Back

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Card 11

Front

What does rain falling on some types of rock do?

Back

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Card 12

Front

Give two examples of soluble compounds that are dissolved by water

Back

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Card 13

Front

What does hard water contain that makes it good for you?

Back

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Card 14

Front

What does drinking hard water also decrease your risk of?

Back

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Card 15

Front

What is temporary hardness caused by?

Back

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