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OpenStudy (anonymous):
Which of the following is an example of a chemical change? - iron changing color when heated - gas bubbles forming in boiling water -balls of wax forming when melted wax is poured into ice water -a gas forming when vinegar and baking soda are mixed
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OpenStudy (anonymous):
the others are physical changes: color, temp this is a chemical reaction: a gas forming when vinegar and baking soda are mixed
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