Physical Science Unit 2 Review

What is a mixture?

• elements chemically combined
• a combination of different things
• it is found on the Periodic Table 
• it is made of chemical

What does it mean if a mixture is heterogeneous?

• you can see the different parts
• cannot tell one part from another
• very well blended
• made of elements

What type of mixture is this?

• heterogeneous 
• homogeneous

Coloured water is an example of a

• homogeneous mixture
• heterogeneous mixture

A substance that is made up of only one kind of atom is a(an)

• compound
• homogeneous mixture
• element
• solution

This picture represents which of the following?

• element
• compound
• mixture

At higher temperatures

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

Freezing

• Solid to gas
• Liquid to solid
• Gas to solid
• Liquid to gas

Boiling

• liquid to gas
• gas to solid
• gas to liquid
• solid to liquid

Which state of matter has tightly packed molecules?

• solid
• liquid
• gas