Bell-Work October 1 A physical property is a

characteristic that we measure WITHOUT CHANGING THE SUBSTANCE.

What do you think a Physical Change is?

Give an example of a Physical Change.

Homework Check Gas & Liquid

Liquid & Solid

Solid, Liquid, & Gas

Gas

Liquid

Solid

Modeling Activity If you eat them, you will get a zero!

You can eat the treats at the END of the activity

Follow instructions on your handout

Have Ms. Pahls check your work before consuming it!

Physical Changes Physical Changes are changes that take

place where the substance present doesn’t change. Chop Cut Melt Freeze Boil Condense

Phase Changes All phase changes are

physical changes The chemical substance

does not change Only the behavior of the

particles changes.

4 Phase Changes

Boil Freeze Melt Condense

TPS: Which are gaining energy? Which are

losing?

Boil Freeze Melt Condense

Gaining Energy Melting (Solid to a

Liquid) Boiling (Liquid to a Gas)

Losing Energy Freezing (Liquid to a

Solid) Condensing (Gas to a

Liquid)

4 Phase Changes

Boil Freeze Melt Condense

Your Task of the Day Groups will be assigned.

You will have 10 minutes to organize your group.

After 10 minutes, your group will perform your skit of your phase change for the class.

The class will have to guess what your phase change was on their card.

Closure: On your card: write a

summary of each skit indicating how you knew it was the phase change you decided it was.