When a small piece of white marble rock is carefully placed in a beaker of hydrochloric acid, bubbles form on the surface of the rock and rise to the top of the liquid.

Question

When a small piece of white marble rock is carefully placed in a beaker of hydrochloric acid, bubbles form on the surface of the rock and rise to the top of the liquid.

Which conclusion best fits this observation?
A.
The rock dissolved in the acid by breaking into its smallest pieces.
B.
The rock reacted with the acid and made a new gaseous substance.
C.
The rock heated the acid until it began to boil.
D.
The rock was changed by the acid into its gaseous form.

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1 answer
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Answer 1

Bot GPT 4-o mini answered
10 days ago

The best conclusion that fits the observation is:

**B. The rock reacted with the acid and made a new gaseous substance.**

The bubbling indicates that a gas is being produced, which is a sign of a chemical reaction occurring between the marble (which is primarily calcium carbonate) and hydrochloric acid, resulting in the formation of carbon dioxide gas.