Matter & Molecules
What is anything that has weight and takes up space?
Matter
Which state of matter keeps its own shape?
Solid
What is a characteristic used to describe or sort matter called?
Property
What is the process called when ice changes from a solid to a liquid?
Melting
Ice is solid water.
True
What are the tiny particles that make up matter called?
Molecules
Which state of matter flows and takes the shape of its container?
Liquid
What tells us how much space something takes up?
Volume
What happens when liquid water loses enough heat and becomes ice?
Freezing
Water vapor is a liquid.
False. Water vapor is a gas.
What are two characteristics of matter?
Weight & Taking up Space
Which state of matter can spread out to fill a space and easily escape?
What describes how tightly molecules are packed together?
Density
What process changes liquid water into water vapor when enough heat is added?
Boiling
A liquid always keeps its own shape.
False. A liquid takes the shape of its container.
Is air matter, even though we cannot usually see it?
Yes! Air has weight and takes up space.
Why does milk change shape when poured from a cup into a bowl?
Because milk is a liquid, and liquids take the shape of their containers.
Cereal and raisins are combined in a bowl. What is this combination called?
Mixture
An ice cube melts on a warm day. What change of state has occurred?
Change from solid to liquid
Matter can change from one state to another.
True.
A student says air is not matter because it cannot be seen. What is wrong with this statement?
Air is matter because it has weight and takes up space, even though we cannot usually see it.
Name the three states of matter and give one example of each.
Solid—ice; liquid—water; gas—water vapor.
A student describes a rock by its color, texture, and size. What are these descriptions examples of?
properties of matter
Complete both changes: liquid water to ice, and liquid water to water vapor through boiling.
Freezing and Boiling
When enough heat is added to a liquid, it will freeze.
False. Adding enough heat can cause a liquid to boil. Freezing occurs when a liquid loses enough heat.