Understanding Melting and Solidifying

What is melting?

• A process of changing a liquid to a solid

• A process of changing a solid to a liquid

• A process of changing a gas to a solid

• A process of freezing a liquid

What causes melting?

• Cooling

• Heating

• Freezing

• Solidifying

What is solidifying?

• A process of changing a liquid to a solid

• A process of changing a solid to a gas

• A process of heating a solid

• A process of changing a solid to a liquid

What happens to the particles in a solid when it melts?

• They move closer together

• They stay in place

• They move faster and further apart

• They slow down

In the change of state, what does heating cause?

• Freezing

• Melting

• Solidifying

• Cooling

When water freezes, it changes from a ________ to a ________.

• Liquid, gas

• Gas, solid

• Liquid, solid

• Solid, liquid

When a solid melts, what does it become?

• Gas

• Another solid

• Liquid

• Ice

What is the process called when water turns into ice?

• Freezing

• Melting

• Boiling

• Heating

What happens to particles in a liquid when it solidifies?

• They move closer together and slow down

• They move faster and spread out

• They stay the same

• They disappear

What is an example of solidifying?

• Ice cream melting in the sun

• Water boiling

• Water freezing into ice

• Salt dissolving in water