Mario places 10 mL of water in a test tube and heats the liquid over a Bunsen burner for 2 minutes. After removing the test tube from the Bunsen burner, there are 6 mL of water left in the test tube. This experiment is a good example of a

Question

A.
physical change involving phase changes.
B.
chemical change involving chemical reactions.
C.
chemical change involving phase changes.
D.
physical change involving chemical reactions.

Answer 1

The experiment described involves heating water and observing a reduction in the volume of water from 10 mL to 6 mL due to evaporation. This is a physical change involving phase changes, as the water transitions from a liquid to a gas (steam) without altering its chemical composition.

Thus, the correct answer is: A. physical change involving phase changes.