Which answer below correctly identifies the type of change and the explanation for the mixture of calcium corbonate and hydrochloric acid?

Physical change because even though gas formation was observed, the calcium carbonate retained its original properties.

Physical change because even though a particle size change was observed, the calcium retained its original properties.

Chemical change because gas formation was observed, which indicated that the calcium carbonate was transformed into a different substance.

Chemical change because a particle size change was observed, which indicated that the calcium carbonate was transformed into a different substance.

Question

Chemistry

Essence Daniel

12 May, 12:02

Which answer below correctly identifies the type of change and the explanation for the mixture of calcium corbonate and hydrochloric acid?

Physical change because even though gas formation was observed, the calcium carbonate retained its original properties.

Physical change because even though a particle size change was observed, the calcium retained its original properties.

Chemical change because gas formation was observed, which indicated that the calcium carbonate was transformed into a different substance.

Chemical change because a particle size change was observed, which indicated that the calcium carbonate was transformed into a different substance.

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Answers (2)

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Jadon · Answer 1

Chemical change because gas formation was observed, which indicated that the calcium carbonate was transformed into a different substance.

The formation of gas means that calcium carbonate has lost its chemical identity and converted to something else with a different set of atoms arranged in a different manner.

Ignacio Odom · Answer 2

C chemical change because gas formation was observed, which indicated that the calcium carbonate was transformed into a different substance