States of Matter
What are the three common states of matter?
Solid, liquid, and gas
True or false: Particles in a solid are completely still.
False. They vibrate in place.
What tool do we use to measure mass?
Balance scale
What happens to ice when it gains enough heat?
It melts into liquid water.
Which state of matter can be poured but keeps its volume?
Liquid
Which state of matter has a fixed shape and volume?
Solid
Which state of matter has particles that are spread farthest apart?
Gas
What unit would you use to measure the mass of a small object?
Grams (g)
What is the change from a liquid to a gas called?
Evaporation or vaporization
A balloon filled with air is squeezed. What property of matter does this demonstrate?
Compressibility
Which state of matter has a fixed volume but takes the shape of its container?
Liquid
What happens to particle movement when a substance is heated?
Particles generally move faster.
What tool measures the volume of a liquid?
Graduated cylinder
When most materials are heated, do they expand or contract?
Expand
Why does a metal lid sometimes loosen when warmed?
The metal expands when heated.
What is the change from a liquid to a solid called?
Freezing
In which state of matter are attractive forces between particles the strongest?
Solid
Two blocks have the same volume. Which is denser: the block with more mass or less mass?
The block with more mass
What happens to particle movement when a substance cools?
Particles generally move more slowly.
What is the difference between mass and volume?
Mass is the amount of matter; volume is the space matter takes up.
What is the change from a gas to a liquid called?
Condensation
Why is air easier to compress than water?
Air particles have more space between them, so they can be pushed closer together.
Oil floats on water. Which liquid is denser?
Water
Why does ice float on liquid water?
Ice is less dense than liquid water because water expands as it freezes.
A sealed container of gas is cooled. What happens to the movement of its particles?
The particles move more slowly.