Science 7th

Melting is to pass from...

• liquid to solid

• liquid to gas

• solid to liquid

The change from liquid to solid is called...

• melting

• boiling

• freezing

The states of matter are:

• freezing, liquid, and melting.

• oxigen, carbon dioxide, hidrogen.

• liquid, solid, gas.

Everything around us is...

• ice

• matter

• gas

Which syring contains water?

• 
• 

Which syringe contains air?

• 
• 

Identify boiling in the picture.

• A

• B

• C

• D

Which substance in the table melt at the highest temperature?

• salt

• sugar

• ice

• candle wax

• chocolate

Complete the following phase change.

• solid to gas

• liquid to solid

• solid to liquid

When you tap the jar it makes the jar grains...

• more

• vibrate

• fall down