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13-12-2018
Chemistry

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Which of the following is a physical change. A piece of magnesium metal formed bubbles when dropped in acid
H2O became a vapor when heated
A green chili rotted when left outside
Sodium metal burned with water

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13-12-2018

H2O became a vapor when heated because thats the only one that can go back to its normal state, which is what a physical change is.

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