Chemical Interactions 6 Eng / Span

The particles move faster.

The particles get farther apart.

Contraction is when the volume of a gas decreases as it gets cold.

Atoms rearrange to form new substances, and mass remains the same.

Substance melts.

A process where substances combine or break apart to form new substances.

The energy that particles have due to their motion.

A solid that forms from a liquid solution during a chemical reaction.

Physical changes do not alter the substance's chemical composition, while chemical changes do.

Rust forming on iron.