States of Matter
Physical Changes
Small Particles
Water Changes
Evidence & Models
100

This state of matter has a definite shape and volume.

What is a solid?

100

A change where matter changes shape or size but no new matter forms.

What is a physical change?

100

Tiny pieces of matter too small to be seen.

What are particles?

100

Water changing from liquid to solid is called this.

What is freezing?

100

Information that supports a scientific claim.

What is evidence?

200

This state of matter takes the shape of its container but keeps the same volume.

What is a liquid?

200

Crushing a can is an example of this kind of change.

What is a physical change?

200

Scientists use these to explain things too big or small to see directly.

What are models?

200

Water changing from gas to liquid is called this.

What is condensation?

200

Condensation on a cold window is evidence that this is in the air.

What is water vapor?

300

This state of matter spreads out to fill any container.

What is a gas?

300

When ice changes into liquid water, it is called this.

What is melting?

300

A balloon expanding provides evidence that air takes up this.

What is space?

300

Morning dew forms because water vapor does this.

What is condenses?

300

A globe is a model of this

What is Earth?

400

Water changes into this state when it evaporates.

What is a gas (water vapor)?

400

The amount of matter gained or lost during a physical change.

What is none?

400

Sugar seems to disappear in water because it does this.

What is dissolve?

400

This process changes liquid water into water vapor.

What is evaporation?

400

Heating water helps sugar dissolve faster because particles move this way.

What is faster?

500

Ice floats because it has a lower ______ than liquid water.

What is density?

500

This scientific idea says matter is conserved during physical changes.

What is conservation of matter?

500

When dissolved salt water evaporates, this is left behind.

What is salt crystals?

500

The three common states of matter are solids, liquids, and this.

What are gases?

500

Matter is made of particles too small to be seen—this is the main scientific claim of Chapters 3 and 4.

What is matter / is made of small particles?