Changes in Matter

TEKS 7.6C

Changes in Matter

KEY IDEAS

• What is a physical change?
• What is a chemical change?
• How can you distinguish between physical

and chemical changes?

Words to Know

physical change
chemical change

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Copyright © Savvas Learning Company LLC. All Rights Reserved. Savvas is not responsible for any modifications made by end users to the content posted in its original format.

What is a physical change?

Photo credit: Barbara Rus/Shutterstock

Open Ended

What is a Physical Change? Include a picture of an example.

A physical change is...

Copyright © Savvas Learning Company LLC. All Rights Reserved. Savvas is not responsible for any modifications made by end users to the content posted in its original format.

What is a physical change?

A physical change alters
the form or appearance of
matter, but it does not turn
any substance in the matter
into a different substance.
Physical changes in matter
include changes in shape,
state, or form.

Photo credit: Barbara Rus/Shutterstock

Dropdown

Directions: Complete the sentence with the correct words.

Iron is a metal that can be made into a magnet. When iron is magnetized, it attracts other metals containing iron. Magnetization is an example of a

Select answer

because iron ​

Select answer

change into a new substance.

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What is a chemical change?

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Open Ended

What is a Chemical Change? Include a picture of an example.

A chemical change is...

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What is a chemical change?

A chemical change is a change in matter in which one or more new substances form. The new substances have different properties from the substances that existed before the change.

Open Ended

Directions: Rewrite each false statement so it is true.

~

A change in state of matter is evidence of a chemical change.

Open Ended

Directions: Rewrite each false statement so it is true.

~

Chemical changes are usually reversible.

Open Ended

Directions: Rewrite each false statement so it is true.

~

Chemical changes do not result in new substances.

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How can you distinguish between physical and chemical changes?

Photo credit: Imgorthand/E+/Getty Images

Open Ended

How can you distinguish between physical

and chemical changes?

The difference between physical and chemical changes is...

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How can you distinguish between physical and chemical changes?

A chemical change occurs when a new substance forms.

Signs that a new substance has formed include:

•formation of a precipitate

•a change in color or odor

•a change in thermal energy

Photo credit: Imgorthand/E+/Getty Images

​•formation of a gas

Categorize

Options (7)

Melting popsicle

frying an egg

Molding a clay pot

Burning a match

tearing paper

Alka Seltzer + Water

Making a salad

Distinguish: Categorize each example as physical or chemical changes.

Physical Change

Chemical Change