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29 March, 12:08

Sally and John are learning all about chemical reactions. To explore chemical reactions, they have decided to investigate the amount of time it takes ice to become liquid water. Which of the following is the BEST explanation for why a chemical reaction did not take place?

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  1. 29 March, 12:28
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    Ice melting is a physical change (not a chemical change). The atoms of the water are not changing, but the physical state of the water is.

    Physical change: ice melting

    Chemical change: hydrogen and oxygen coming together to make H2O
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