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 melting, freezing, and cutting.

Front

What is a Chemical Change?

Back

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

Front

Is melting a chocolate bar a Physical or Chemical Change?

Back

Melting a chocolate bar is a Physical Change.

Front

What happens to water vapor when it cools down on a cold glass?

Back

The water vapor condenses into liquid water because the temperature of the glass is colder than the air.

Front

Is water freezing into ice a Physical or Chemical Change?

Back

Water freezing into ice is a Physical Change.

Front

What is an example of a Chemical Change?

Back

An example of a Chemical Change is rust forming on iron.

Front

What happens during a Physical Change?

Back

During a Physical Change, the form of a substance changes, but its chemical identity remains the same.

Front

What is condensation?

Back

Condensation is the process where water vapor in the air cools down and changes into liquid water.

Front

Is cutting your hair a Physical or Chemical Change?

Back

Cutting your hair is a Physical Change.

Front

What is an example of a Physical Change?

Back

An example of a Physical Change is melting ice.