States of Matter

Melting

The process by which a solid turns into a liquid due to the addition of heat, causing the molecules to gain energy and move more freely.

Condensation

The process by which a gas turns into a liquid as it loses heat, leading to a decrease in molecular motion and energy.

Evaporation

The process by which a liquid turns into a gas due to the addition of heat, allowing the molecules to overcome intermolecular forces and move freely.

Sublimation

The process by which a solid turns directly into a gas without passing through the liquid state, usually occurring under specific temperature and pressure conditions.

Deposition

The process by which a gas turns directly into a solid without becoming a liquid, often occurring when temperature and pressure conditions favor solid formation.

Freezing

The process by which a liquid turns into a solid as it loses heat, leading to a decrease in molecular motion and the formation of a rigid structure.