MS-PS1-2

Front

Why do atoms bond together to form molecules and compounds?

Back

Atoms want to be stable.

Front

How are chemical reactions different from a physical change?

Back

Chemical reactions create a new substance, physical changes do not.

Front

Which is not a physical property? Options: flammability, melting point, boiling point, density

Back

flammability

Front

A physical change happens when …

Back

the substance does not change into a new substance with new chemical properties

Front

Which of the following is NOT an example of a physical change?

• Cutting paper
• Burning wood
• Melting glass
• Boiling water

Back

Burning wood

Front

Melting point

Back

the temperature at which a substance changes from a solid to a liquid

Front

Boiling point

Back

the temperature at which a substance changes from a liquid to gas

Front

Summarize the process of ice turning into water and then into steam.

Back

a solid to liquid to gas

Front

What is a common sign that a chemical change has occurred?

Back

A chemical has turned a different color

Front

What is the process called when a gas turns into a liquid?

Back

Condensation