What happens to the particles of a substance when it undergoes melting?

The particles move farther apart.

The particles move closer together.

The particles remain in the same position.

When a gas undergoes adiabatic expansion, what change occurs in the gas molecules?

The average kinetic energy of the molecules decreases.

The average kinetic energy of the molecules increases.

The intermolecular forces become stronger.

The number of gas molecules increases.

Which of the following statements correctly describes the critical point in a phase diagram?

The point at which the liquid and gas phases are indistinguishable.

The temperature and pressure at which a solid melts into a liquid.

The pressure and temperature at which a substance sublimes.

The temperature and pressure at which a liquid boils.

States Of Matter Quiz: Solid, Liquid, Or Gas? Mind Map

Reviewed by Zohra Sattar Waxali

Zohra Sattar Waxali, PhD (Chemistry) |

Chemistry

Review Board Member

Dr. Zohra Sattar Waxali earned her doctorate in chemistry and biochemistry from Northwestern University, specializing in the metallomes of cardiac cells and stem cells, and their impact on biological function. Her research encompasses the development of arsenoplatin chemotherapeutics, stapled peptide estrogen receptor inhibitors, and antimicrobial natural products.

, PhD (Chemistry)

By Cardinalcm

Cardinalcm

Community Contributor

Quizzes Created: 6 | Total Attempts: 72,197

| Attempts: 65,200 | Questions: 15 | Updated: Nov 12, 2025