This flask originally held some copper wire and a clear solution of nitric acid. The two substances reacted and produced a brown gas and a blue solution. This reaction cannot be reversed. Evidence of a chemical reaction is shown by A) ice forming. B) steam rising. C) the formation of a gas. D) a change in state from a solid to a liquid.

Question

Ronin

Physics

30 October, 11:40

This flask originally held some copper wire and a clear solution of nitric acid. The two substances reacted and produced a brown gas and a blue solution. This reaction cannot be reversed. Evidence of a chemical reaction is shown by A) ice forming. B) steam rising. C) the formation of a gas. D) a change in state from a solid to a liquid.

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Answers (1)

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Ann Cabrera · Answer 1

The answer is C) the formation of a gas because:

A) ice forming is a result of temparature change

B) steam rising is also a result of temparature change

D) a change in state can be reversed