Question

Molecules do not move around but vibrate in place is what?

A) Solid state
B) Liquid state
C) Gas state
D) Plasma state

Answer 1

Molecules that vibrate in place but do not move around characterize the solid state of matter, as opposed to liquids or gases where particles have more movement. The correct answer is option (A).

Step-by-step explanation:

Molecules that do not move around but vibrate in place describe the solid state of matter. In the solid state, atoms or molecules are packed closely together and are in fixed positions relative to each other, though they can vibrate. These particles are held in place by strong intermolecular forces, which prevent them from moving freely past one another.

Solids have a defined shape and volume, which are not dependent on the container they are placed in. This is different from liquids and gases, where molecules have more freedom to move.