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steposvetlana [31]
3 years ago
5

Which of the following is a chemical reaction

Biology
2 answers:
e-lub [12.9K]3 years ago
7 0

Answer:

the answer is b

Explanation:

Lerok [7]3 years ago
5 0
A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change. Absolute confirmation of a chemical change can only be validated by chemical analysis of the products.
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