Molecular Motion

The molecules of a solid move (faster or slower) than a liquid.

• Faster

• Slower

• At the same speed

• Depends on the temperature

Matter

• anything that has mass and takes up space

• a substance that can be seen but not touched

• a form of energy that cannot be measured

• a concept that describes the absence of physical substance

The molecules of a gas move (faster or slower) than a solid.

• Faster

• Slower

• At the same speed

• Depends on the temperature

Temperature

• a measure of how hot or cold something is

• a measure of the speed of sound

• a measure of the amount of water vapor in the air

• a measure of the distance between two points

Boiling

• Liquid changes to a gas underneath the surface

• Liquid freezes into a solid

• Gas condenses into a liquid

• Solid melts into a liquid

State of matter that the molecules are moving so quickly that they cannot be contained

• Solid

• Liquid

• Gas

• Plasma

Evaporation

• Liquid changes to a gas at the surface

• Solid changes to a liquid

• Gas changes to a liquid

• Liquid changes to a solid

Which is an example of a solid?

• Steam from a kettle

• Air in a bike tire

• Your science notebook

• Water in a glass

Freezing

• Liquid changes to a solid

• Solid changes to a liquid

• Gas changes to a liquid

• Liquid changes to a gas

The molecules of a liquid move (faster or slower) than a gas.

• Faster

• Slower

• At the same speed

• Depends on the temperature