Physical and Chemical Changes

Front

What is a chemical change?

Back

A change where one or more new substances are created.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What are the signs of a chemical change evident in a fire?

Back

Color change, producing heat, light produced, all of the above.

Tags

NGSS.MS-PS1-2

Front

What is the main difference between a chemical change and a physical change?

Back

Chemical changes the substance's identity; physical does not.

Tags

NGSS.MS-PS1-2

Front

What is an example of a physical change?

Back

The melting of wax.

Tags

NGSS.MS-PS1-4

Front

Why is dissolving candy considered a physical change?

Back

Because a new substance is NOT formed, and this can be reversed.

Front

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

Back

The identity of the substance changes.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Can physical changes be reversed?

Back

Yes, physical changes can often be reversed.

Tags

NGSS.MS-PS1-4

Front

What is an example of a chemical change?

Back

Burning wood, which produces ash and smoke.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is a common indicator of a chemical change?

Back

Production of gas, such as bubbles.

Tags

NGSS.MS-PS1-2

Front

Is freezing water a physical or chemical change?

Back

Freezing water is a physical change.

Tags

NGSS.MS-PS1-4