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79. Explain why the production of a gas does not always mean that a chemical reaction has occurred.
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79. Explain why the production of a gas does

not always mean that a chemical reaction has
occurred.

User BLC
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1 Answer

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Is evaporation of water considered a chemical reaction? No because it’s a physical change. Some reactions have gases as a product and some do not. Just because there’s a gas doesn’t mean a chemical reaction has occurred.
User Myobis
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