Physical and Chemical Changes

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 changes in shape, size, or state.

Front

What is a Chemical Change?

Back

A Chemical Change is a change that results in the formation of new chemical substances. It involves a change in the chemical composition of the substance. Examples include rusting, burning, and cooking.

Front

True or False: A Physical Change changes the identity of a substance.

Back

False. A Physical Change does not change the identity of a substance.

Front

What happens to the molecules during a Physical Change?

Back

During a Physical Change, the molecules rearrange but do not change their chemical structure.

Front

What happens to the molecules during a Chemical Change?

Back

During a Chemical Change, the molecules break apart and recombine to form new substances.

Front

Is cutting your hair a Physical Change or a Chemical Change?

Back

Cutting your hair is a Physical Change.

Front

Is melting ice a Physical Change or a Chemical Change?

Back

Melting ice is a Physical Change.

Front

What are the three states of matter?

Back

The three states of matter are solid, liquid, and gas.

Front

Is an ice cube a solid, liquid, or gas?

Back

An ice cube is a solid.

Front

Is cutting a log of wood in half a Physical Change or a Chemical Change?

Back

Cutting a log of wood in half is a Physical Change.