Unit 7.1 Review

Front

What is matter?

Back

Matter is anything that has mass and takes up space.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is conservation of mass?

Back

Conservation of mass is the principle stating that mass cannot be created or destroyed in a closed system during a chemical or physical change.

Front

What is solubility?

Back

Solubility is the ability of a substance to dissolve in another substance without changing its chemical identity.

Front

What happens to the mass of a substance during a physical change?

Back

The mass remains the same because matter is neither created nor destroyed.

Front

Give an example of a physical change.

Back

Ice melting into water is an example of a physical change.

Front

What is an example of matter being conserved during a physical change?

Back

A rock breaking down into smaller pieces.

Front

What is the difference between a physical property and a chemical property?

Back

A physical property can be observed without changing the substance's chemical identity, while a chemical property involves a change in the substance's chemical composition.

Front

What is an example of a chemical change?

Back

Burning wood is an example of a chemical change.

Front

What is the role of energy in phase changes?

Back

Energy is absorbed or released during phase changes, but it does not change the mass of the substance.