Physical and Chemical Changes

Front

What is a physical property?

Back

A characteristic of a substance that can be observed or measured without changing its identity, such as color, state of matter, or density.

Front

Give an example of a physical property.

Back

State of matter (solid, liquid, gas).

Front

What is a chemical property?

Back

A characteristic of a substance that describes its ability to change into different substances, such as reactivity with acid or oxygen.

Front

What happens to Kool Aid when it dissolves in water?

Back

It demonstrates a physical property because it does not change its chemical identity.

Front

What is tarnishing in relation to silver?

Back

Tarnishing is a chemical property of silver, indicating its ability to react with air and light.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

Give an example of a physical change.

Back

An ice pack getting cold after being placed in the freezer.

Front

What is evidence of a physical change?

Back

Shape change is evidence of a physical change.

Front

What is a chemical change?

Back

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

Front

Give an example of a chemical change.

Back

Burning wood, which produces ash and smoke.