PS Ch 15

Which of these is a physical change?

• Burning a candle
• Putting mentos in coke
• Blowing up a balloon
• Digesting chips

Which is a chemical change?

• Coloring a picture with crayons
• Squeezing juice from an orange
• Toasting bread
• Washing your hands

Which is an example of a chemical change?

• Metal being melted
• Bread dough being baked
• Water being boiled
• A piece of paper being cut in half

How do you know what a chemical change has occurred?

• A smell was created
• Bubbles were created
• A noise was created
• A new substance was created

The melting of wax is an example of a

• chemical change
• physical change

Cutting a log in to small pieces is a chemical change.

• true
• false

What is an example of a Chemical change?

• Ripped paper 
• boiled egg
• cracked egg
• sugar in water

Is gatorade powder dissolving in water physical or chemical change?

• Physical 
• Chemical

Is the formation of the grand canyon a physical or chemical change?

• Physical 
• Chemical

Rust on an iron bar is an example of chemical change.

• True 
• False