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 was changed by the acid into its gaseous form. d. the rock heated the acid until it began to boil.

Explanation:

When a rock reacts with hydrochloric acid and bubbles form, it indicates a chemical reaction producing a gaseous substance. Option A is about dissolution which doesn't explain bubbles. Option C is incorrect as the rock doesn't turn into its gaseous form directly. Option D is about boiling which is not relevant here. Option B correctly states that the rock reacts with the acid to make a new gaseous substance causing the bubbles.

Answer:

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