Unit #3 Review Guide: States of Matter, Changes of State, and Classification of Matter

Chemical Property

The characteristics of a pure substance that describe its ability to change into another substance.

Physical Property

The characteristics of a pure substance that can be observed without changing it into another substance.

Chemical Change

A change in matter that produces $1$ or more new substances.

Physical Change

Any change that alters the form or appearance of matter but does not make any substance in the matter into a different substance.

Surface Tension

The result of an inward pull among the molecules of a liquid that brings the molecules on the surface closer together.

Viscosity (Resistance to Flowing)

The opposition or resistance of liquids to flowing.

Crystalline Solid Structure

A particle arrangement in which particles are locked in a perfect repeating pattern.

Amorphous Solid Structure

A particle arrangement in which particles are frozen randomly without a pattern.