When a strip of zinc metal is added to a test tube of hydrochloric acid, the liquid forms bubbles, and the test tube feels hot. the bubbles are a result of the formation of hydrogen gas. what does the hot test tube indicate? a. the reaction releases heat. b. hydrogen gas absorbs heat. c. the reaction absorbs heat. d. a chemical change has been reversed.
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When a strip of zinc metal is added to a test tube of hydrochloric acid, the liquid forms bubbles, a...
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