Question

Which statement best explains how density changes when a liquid becomes a gas

a. density decreased because the mass changes
b. density increases because the molecules move faster
c. density decreases because the molecules move farther apart
d. density increases because the molecules occupy more space

Answer 1

c. density decreases because the molecules move farther apart

Step-by-step explanation:

As a liquid is heated, the molecules move faster and move farther apart. This causes the volume to increase, which causes the density to decrease.