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27 February, 03:44

What indicates that a chemical change has occurred?

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  1. 27 February, 07:43
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    Many things could indicate that a chemical change has occurred. The release of a gas, or bubbling, etc. Just be careful not to mix it up with physical changes. A chemical change means that the chemical structure is different. You can reverse a physical change, but you cannot reverse a chemical reaction.
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