Describing Matter
Measuring Matter
States of Matter
Describing State Changes
Naming State Changes
100
Everything in the universe is made of this.
Matter
100
This a measure of how much matter there is in an object.
Mass
100
This is the only state of matter that holds its own shape.
Solid
100
What happens to the speed of molecules when you add heat energy to a substance?
The molecules speed up.
100
This is the name of the change from solid to liquid.
Melting
200
Give an example of matter.
Answers will vary.
Ex: tree, desk, paper, pen, pencil, person
200
This is a measure of how much space something takes up.
Volume
200
Which state of matter is challenging to see and feel?
Gas
200
When water turns to ice, what happens to the molecules inside?
The molecules slow down.
And/Or
The molecules become fixed in one position.
200
This is the name of the change from gas to liquid.
Condensation
300
This is a word for the characteristics used to describe matter (color, shape, size, etc.).
Properties
300
This is a measure of how heavy something is for its size or how much mass there is in a given volume.
Density.
300
Which state of matter has molecules that vibrate in place?
Solid
300
As a substance turns from liquid to gas, what happens to its temperature?
Temperature remains constant.
300
Which state change is represented by the arrow labeled A?
Freezing
400
What is an example of a physical change?
Answers will vary.
Ex: a change in shape or size.
400
Which quantity to we measure in grams?
Mass
400
How do the molecules in a liquid vary from the molecules in a gas?
The molecules in a liquid are packed more closely together than the molecules in a gas.
And/Or
The molecules in a liquid are moving more slowly than the molecules in a gas.
400
What do you have to do to a solid to turn it into a liquid?
Add heat energy.
Or
Add energy.
Or
Add heat.
400
Which arrow represents evaporation?
Arrow D
500
What is one sign of a chemical change?
Answers will vary.
Ex: smoke, unexpected change in color, formation of a solid, unexpected change in texture
500
Which quantity do we measure in mL?
Volume
500
Which state of matter has a definite volume but no definite shape?
Liquid
500
In order for water to turn into steam, what has to happen to its molecules?
They have to speed up.
And/Or
They have to spread apart.
500
What is sublimation?
The change directly from solid to gas.