Phases of Matter

What distinguishes the forms of matter?

States of Matter: SOLIDS

Molecules vibrate back and forth.

Particles don’t have the energy to move around each other.

Does not flow Rigid structure

Definite volume Definite shape

States of Matter: LIQUIDS

Particle take the shape of their container.

Particles have enough energy to move around each other.

Definite volume NO definite shape

States of Matter: GASES

Particles have enough energy to move around freely.

Gases can exert pressure and they are compressible.

Takes the shape and volume of a container.

NO definite volume NO definite shapeStates of Matter

States of matter: PLASMA

Most common state of matter in the universe.

Gas-like mixture of particles.

This occurs naturally on the sun and in stars.

NO definite volume NO definite shape

On earth, plasma can be found in florescent light bulbs.

How does energy change matter?

Matter can change from one form to another by the addition or subtraction of energy. Solid melting Liquid Liquid evaporation Gas Gas condensation Liquid Liquid freezing Solid Solid deposition Gas Gas sublimation Solid

Phase changes: Heating

Tempera t ure

Time

Solid

Liquid

Gas

Melting

Evaporation

Phase changes: Cooling

Tempera t ure

Time

Solid

Liquid

Gas

Condensation

Freezing