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.
Hydrogen gas absorbs heat.
B.
The reaction releases heat.
C.
A chemical change has been reversed.
D.
The reaction absorbs heat.
Answers: 1
Biology, 21.06.2019 23:00, annabellthedivp3u9ve
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Answers: 3
Biology, 22.06.2019 15:00, cdeanrn8971
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Biology, 22.06.2019 15:30, allenpaietonp9v8sv
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