Question

The diagram shows atoms in two different states.



Which statement best compares the motion of atoms in A and B?

A.

Atoms in A will move less than in B because A is a solid and B is a gas.

B.

Atoms in A will move more than in B because A is a gas and B is a solid.

C.

Atoms in A will move faster than in B because A is a solid and B is a gas.

D
.

Atoms in A will move slower than in B because A is a gas and B is a solid.

Answer 1

A.

Atoms in a solid vibrate about fixed positions (move less), while atoms in a gas move freely and rapidly (move more).