Question

which of the following is true about density and states of matter for most substances?
a. a substance is denser as a liquid than as a solid.
b. a substance is denser as a gas than as a solid.
c. a substance is denser as a gas than as a liquid.
d. a substance is denser as a solid than as a gas.

Explanation:

Density is mass per unit volume. In solids, particles are closely - packed, in liquids they are less closely - packed, and in gases, particles are far apart. So, for most substances, solids are denser than liquids and liquids are denser than gases.

Answer:

D. A substance is denser as a solid than as a gas.