Which of the following is an example of a physical property?

• Color

• Rusting

• Burning

• Bubbling

What is a compound?

• Matter made of a single type of atom

• Matter made of two or more types of atoms

• Matter that cannot be changed

• Matter that is always a gas

What happens to paper when you burn it, compared to when you cut it?

• Burning changes the paper into a new substance, while cutting does not.

• Cutting changes the paper into a new substance, while burning does not.

• Both burning and cutting change the paper into a new substance.

• Neither burning nor cutting change the paper at all.

Which of the following is NOT a physical change?

• Melting

• Freezing

• Rusting

• Boiling

What is flammability?

• How easily a substance melts

• How easily a substance catches fire

• How easily a substance dissolves in water

• How easily a substance changes color

Why can a substance be identified from both its physical and chemical properties?

• Because both types of properties describe how a substance looks and reacts

• Because only physical properties matter

• Because only chemical properties matter

• Because properties do not help identify substances

Which of the following is an example of a physical change?

• Burning wood to ash

• Melting ice cubes into water

• Paper turning to ashes

• Baking a cake

What happens to the chemical properties of paper when you fold it into a paper airplane?

• The chemical properties change

• The paper turns into a new substance

• The chemical properties stay the same

• The paper burns

Which of the following is NOT evidence of a chemical change?

• Color change

• Gas bubbles

• Melting

• Light formation

Why can you not "unburn" ashes to get back the original paper?

• Because burning is a physical change

• Because burning is a chemical change and cannot be reversed

• Because ashes are still paper

• Because the paper is only folded