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Quenching

physical science Maturity 11-13

We can make metal strong.

ArthurSiegelcoke1.jpg
ArthurSiegelcoke1.jpg
First, we heat it up. Then we cool it fast. We use water or oil. This makes the metal hard. It helps make tools. Do you like tools?

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File:ArthurSiegelcoke1.jpg
ArthurSiegelcoke1.jpg
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