Physical and Chemical Changes

T/F: A tomato changing from green to red is an example of a physical change.

• TRUE

• FALSE

Answer explanation

A change in color is a sign of a chemical change.

T/F: Soaking a piece of paper in water is an example of a physical change.

• TRUE

• FALSE

Answer explanation

Soaking the paper in water does not change the chemical makeup of the paper.

T/F Cracking an egg and mixing it up is an example of a chemical change.

• TRUE

• FALSE

Answer explanation

This is a physical change. Cooking the egg would be an example of a chemical change.

T/F: Rust forming is an example of a physical change.

• TRUE

• FALSE

Answer explanation

The formation of a new solid is an example of a chemical change.

Which of the following are ways to create a chemical change?

• Tearing

• Cooking

• Warming

• Cooling

Answer explanation

Warming and cooling naturally does not change the chemical makeup of something. Cooking is an irreversible change that creates a change in texture, smell, color, and chemical makeup.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Mixtures and solutions are examples of ________ change.

Homogenous mixtures are mixtures in which one substance dissolves in another.

• TRUE

• FALSE

This is an example of which type of mixture?

• Homogenous

• Heterogenous

Toast is an example of which type of change?

• Chemical

• Physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A heterogenous mixture is an example of which type of change?

• Chemical

• Physical