If you are asked to compare matter in solid, liquid, and gaseous states, which statement best defines a gas?

Question

A.
highest energy, highest molecular motion, and least dense packaging of molecules
B.
highest energy, highest molecular motion, and most dense packaging of molecules
C.
least energy, highest molecular motion, and least dense packaging of molecules
D.
highest energy, least molecular motion, and least dense packaging of molecules

Answer 1

The statement that best defines a gas is:

A. highest energy, highest molecular motion, and least dense packaging of molecules.

Gases have high energy and exhibit rapid molecular motion, which allows their molecules to be spaced far apart compared to solids and liquids, resulting in low density.