Changes of State
Summary: Physical transformations between solid, liquid, and gas without creating new substances. Tags: concepts chemistry physics Created: 2026-05-03T00:00:00Z Last Updated: 2026-05-03T00:00:00Z
Content
Changes of state are physical changes where a substance transitions between solid, liquid, and gas phases. No new substances are formed — the particles remain the same, only their arrangement and energy change.
Key changes of state:
- Melting: solid → liquid
- Freezing: liquid → solid
- Boiling/Evaporating: liquid → gas
- Condensing: gas → liquid
- Sublimation: solid → gas
These are reversible and contrast with chemical reactions, which create new substances.