When zinc is placed in hydrochloric acid, a gas is produced. when the gas is collected in a tube and a lit match is placed in the tube, a pop is heard. this is a test for hydrogen gas. what can be concluded from this observations. a) a change in state has occurred. b) the zinc metal was turned into hydrogen gas. c) a chemical change has occurred producing the hydrogen gas. d) a physical change has occurred producing the hydrogen gas.
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When zinc is placed in hydrochloric acid, a gas is produced. when the gas is collected in a tube and...
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