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18 July, 07:58

Which of the following does not happen during a chemical change?

Mass is gained.

New compounds are formed.

Old compounds are broken down.

Bonds are broken.

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  1. 18 July, 10:33
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    The event that does not happen during a chemical change is old compounds are broken down. Mass is gained, new compounds are formed and b onds are broken are examples of a chemical change.
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