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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asked Apr 11, 2021 103k views

1 vote

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

Chemistry
high-school

Jaor asked

by Jaor

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2 Answers

7 votes

Answer:

A. Formation of gas

Step-by-step explanation:

Took the test and got it correct

Ianis answered Apr 12, 2021

by Ianis

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5 votes

Answer: Formation of a gas

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

OliverAssad answered Apr 18, 2021

by OliverAssad

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