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20 May, 02:28

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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  1. 20 May, 06:09
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    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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