Review: What's the Matter?

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. Examples include melting, freezing, and breaking.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. Examples include burning, rusting, and digestion.

Front

Is glass breaking a chemical or physical change?

Back

Physical change.

Front

What is mass?

Back

Mass is the amount of matter in an object, typically measured in grams or kilograms.

Front

What is weight?

Back

Weight is the force exerted by gravity on an object, which can change depending on the object's location in a gravitational field.

Front

What happens to mass and weight in space?

Back

Mass remains constant regardless of location, while weight can change due to varying gravitational forces.

Front

What is freezing?

Back

Freezing is the process of a liquid turning into a solid when its temperature is lowered.

Front

What is an example of a chemical change?

Back

Burning a piece of paper is an example of a chemical change.

Front

What is the difference between mass and weight?

Back

Mass is a measure of the amount of matter in an object, while weight is the force of gravity acting on that mass.

Front

What is an example of a physical change?

Back

Cutting a piece of paper is an example of a physical change.