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Which evidence is an indication that a chemical reaction has occurred? formation of a gas melting of a substance boiling of a substance freezing of a substance

Which evidence is an indication that a chemical reaction has occurred? formation of a gas melting of a substance boiling of a substance freezing of a substance
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Which evidence is an indication that a chemical reaction has occurred?

formation of a gas


melting of a substance


boiling of a substance


freezing of a substance

User Jaor
by
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2 Answers

7 votes

Answer:

A. Formation of gas

Step-by-step explanation:

Took the test and got it correct

User Ianis
by
9.2k points
5 votes

Answer: Formation of a gas

Explanation: All of the other options are examples of physical changes not chemical change

User OliverAssad
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9.4k points
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