revision

What is the atomic number?

• the number of protons in the nucleus

• the number of neutrons in the nucleus

• the number of protons and neutrons in the nucleus

• the number of protons in the energy levels

Water freezing into ice is an example of a...

• Physical Change
• Chemical Change

Chemical or Physical?  Glass breaking into tiny shards

• Chemical Change
• Physical Change

Physical or Chemical Change?  Cutting an orange into wedges.

• Physical Change
• Chemical Change

Physical or Chemical Change?  Logs burning in a campfire.

• Physical Change
• Chemical Change

Is Gatorade powder dissolving in water physical or chemical change?

• Physical 
• Chemical

Is Gatorade powder dissolving in water physical or chemical change?

• Physical 
• Chemical

Baking cupcakes

• Physical Change
• Chemical Change

The result of this type of change is a new substance.

• chemical

• react

• rust

• decay

If the chemical properties of a substance remain unchanged and the appearance or shape of an substance changes it is called a

• Chemical change 
• Physical change
• Both a physical and chemical change 
• Neither a physical or chemical change