Phases of Matter

To change water from a solid to a liquid to a gas, you must...

• add heat

• remove heat

At higher temperatures

• particles in an object have less energy
• particles in an object move faster
• particles have less enthalpy

Particles of a liquid

• are tightly packed together and stay in a fixed position/pattern

• are free to move around one another but still touch.

The slower the particles in a substance move,

• the colder it is.

• the warmer it is.

• the more energy it has.

• the more enthalpy it has

What state of matter?

• Solid

• Liquid

• Gas

• Plasma!!!

What state of matter?

• Solid

• Liquid

• Gas

What state of matter?

• Solid

• Liquid

• Gas

When the temperature of matter increases the particles...

• speed up and move closer
• speed up and move farther apart
• slow down and move closer together
• slow down and move farther apart

Where on the graph are phase changes taking place?

• 1

• 2

• 3

• 4

• 5

Are there molecules moving at all in a solid brick?

• yes, but only vibrating

• no, they don't move at all

• yes, they move freely and randomly