Phase changes: Matter

Matter changes in a state when its temperature changes is called __________

________ describes how cold or hot an object is.

_______ is used to measure temperature. A temperature reading may be expressed in Degrees or Celsius.

• A. Temperature

• B. Thermometer

What do you call the change in matter when an ice cube melts under the sun?

• A. Solid to Liquid

• B. Liquid to Solid

_____ is the process of changing a solid to a liquid.

The temperature at which a solid starts to melt is called ____?

• A. Melting

• B. Melting point

The process of changing from a liquid to a solid is called _____

• A. Freezing point

• B. Melting point

_________ is the process of change from gas to a liquid

• A. Condensation

• B. Evaporation

The process of changing water (a liquid) to a gas is called ______

• A. Condensation

• B. Evaporation

In ______ , a solid changes into a gas without passing through the liquid phase.

• A. Sublimation

• C. Evaporation