States of Matter

Which state of matter does this picture show?

• Solid

• Liquid

• Gas

What state of matter does this picture show?

• Solid

• Liquid

• Gas

Which state of matter does this picture show?

• Solid

• Liquid

• Gas

As temperature increases, what happens to particles?

• They speed up

• They slow down

As temperature decreases, what happens to particles?

• They speed up

• They slow down

What is happening in this picture of ice melting?

• Molecules are speeding up

• Molecules are slowing down

At higher temperatures

• particles in an object have less energy
• particles in an object move faster
• a gas contracts

The state of matter that has no definite size or shape is

• Solid
• Liquid
• Gas

The slower the particles in a substance move,

• the colder it is.
• the warmer it is.
• the more energy it has.
• the less energy it has.

Thermal energy is...

• heat energy.
• the energy of motion
• energy of nuclear processes.
• an indication of physical change.