Chemistry, 30.11.2020 18:00 abdominguez7187

A student puts a tiny piece of metal into a test tube filled with water. She then puts a cap on the test tube. Which change provides evidence that a chemical reaction occurred?

A)the water bubbles
B)the mixture gets heavier
C)the water level increases
D)the metal sinks to the bottom

Answers: 3

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A student puts a tiny piece of metal into a test tube filled with water. She then puts a cap on the...