Changes in Matter Review GN

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 a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances.

Front

What are physical properties?

Back

Physical properties are characteristics of a substance that can be observed or measured without changing the substance's identity, such as color, mass, and volume.

Front

What are chemical properties?

Back

Chemical properties are characteristics that can only be observed when a substance undergoes a chemical change, such as reactivity and flammability.

Front

Is melting a physical or chemical change?

Back

Melting is a physical change.

Front

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

Back

The mass of a substance remains the same during a physical change.

Front

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

Back

The mass of a substance is conserved during a chemical change, but the substances may change into different forms.

Front

Can a physical change be reversed?

Back

Many physical changes can be reversed, such as freezing and melting.

Front

Can a chemical change be reversed?

Back

Most chemical changes cannot be easily reversed.

Front

What is an example of a physical change?

Back

An example of a physical change is ice melting into water.