The States of Matter

8th gr. Chemistry

S,L,G Category Sort

In your group read the cards provided and decide if the card describes a solid, liquid, or a gas; and then sort.

SolidMolecules have been packed

together tightly

Definite shape

Definite volume

Particles have very little energy

Cannot be compressed easily

Becomes a liquid when heat energy is added

Does not flow easily

Liquid Definite volume

Cannot be compressed easily

Molecules in a liquid are more spread out than a solid, but less spread out than a gas

Shape changes depending on the container

Does not hold a shape

Flows easily

Becomes a gas when heat energy is added

Becomes a solid when heat energy is taken away

Gas

Molecules in a gas spread to fill the entire space they are in

Molecules have the most amount of energy

Does not hold a shape

Easily compressible

Becomes a liquid when heat energy is taken away

S,L,G Simulator

http://www.harcourtschool.com/activity/states_of_matter/index.html

Kinetic Theory of Matter

All matter (solid, liquid, and gas) is made up of tiny particles called atoms, or atoms that are joined to form molecules.

All particles are in constant and random motion.

The particles are colliding with each other and the walls of their container.