Unit 4 Lesson 1: States of Matter (TS)

solid

Has a definite shape and definite volume

crystalline solid

Solids made up of crystals (like salt, sugar, and snow)

amorphous solid

Solids whose particles are not arranged in a regular pattern

liquid

definite volume but no shape

fluid

Particles that allow a liquid to flow from place to place

surface tension

An inward force, or pull, among the molecules in a liquid that brings the molecules on the surface closer together

viscosity

A liquid's resistance to flowing

gas

No definite shape nor a definite volume

pressure

The force of its outward push divided by the area of the walls of the container

temperature

a measure of the average energy of motion of the particles in matter

volume

The amount of space an object takes up

mass

the amount of matter in an object