Changes in Shape
Changes in Temperature
Changes in Physical State
Particle Changes
100

A physical change is...

A change in some properties of matter 

100

True or False?

The temperature of an object is one of its PHYSICAL PROPERTIES.

TRUE

100

Give an example of when a liquid becomes a solid...

Water to ice

cream to ice cream

juice to a popsicle

100

Evaporation happens when...

Particles leave a liquid and become a gas
200

True or False...

A physical change forms a different kind of matter.

False

200
How does a change in temperature cause physical changes in an object?

The object can feel colder or warmer and might cause it to change it's shape.

200
When a liquid becomes colder its particles tend to:

Slow down

200

When particles evaporate they are moving....

UPWARD

300

How can you tell that a physical change does not make a new substance?

The properties of the substance are the same before and after the change.

300

How does a cold temperature effect food?

It can cause a food to freeze.

300
What happens when a solid is heated? Give an example...

A solid will melt...

ice to water

ice cream to cream

popsicle to juice

300

Give an example of Evaporation...

Puddles disappearing from the ground

Clouds forming as water vapor

Water disappearing from a pot of boiling water

400

Give an example of a physical change that you might see with food.

Fruit sliced vs. whole

Ice cream vs. melted

cream vs. whipped cream

400

Give an example of how warming the air could effect the weather.

It could:

Make the sidewalk very hot

Cause snow to melt



400

What is the definition of a freezing point and a melting point?

Freezing point: When a liquid becomes a solid

Melting point- When a solid becomes a liquid

400

The temperature at which evaporations occurs is called...

The Boiling Point

500

Why is cutting paper an example of a physical change?

It is still paper but in a different form.

500

How might information about the effects of hot and cold air be useful on a cold morning when you want to ride your bike.

I might have to add more air in my tires

I might have to dress warmer


500

The melting point of water is 32 degrees F. Do you think the Freezing point is the same temp?

Yes they are the same...

Anything above 32 degrees is melting

Anything below is freezing

500

How can you use melting and boiling points to identify a substance?

Each substance has a specific melting point and boiling point that can be used to identify it.
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