What happens when heat is taken away from a liquid?
It becomes a solid.
100
What is the boiling point of water?
100 C or 212 F
100
Describe the shape and volume of a solid. Why is a solid like that?
definite shape; definite volume
200
What are the three states of matter?
Solid, liquid, gas
200
What do the particles in a solid look like?
packed closely together
200
What is temperature? What is the freezing point of water?
how hot or cold something is - 0 Celsius or 32 F
200
What is evaporation? What causes evaporation?
when liquid water turns into water vapor : heat
200
Describe the shape and volume of a liquid. Why is a liquid like that?
definite volume/ no definite shape
300
What are atoms?
building blocks of matter
300
What do the particles in a liquid look like?
spaced fairly close together
300
What causes a solid to turn into a liquid? What is the melting point of ice?
Heat: O C or 32 F
300
What is condensation? What causes condensation?
change from a gas to liquid : when heat is taken away from a gas
300
Describe the shape and volume of a gas. Why is a gas like that?
no definite shape/ no definite volume
400
Can you measure mass? Explain.
Yes, you can use a balance.
400
What do the particles in a gas look like?
Spaced far apart and bouncing off of each other
400
What is water vapor?
water that has turned into a gas
400
What is the difference between a mixture and solution?
mixture can be separated/ solution can't be separated
400
What are chemical changes? Name 2 examples.
changes that make a new kind of matter form - baking and burning
500
Name 5 examples of physical properties.
size, color, shape, texture, weight
500
Can the volume of a gas change? Explain.
Yes, when a gas is heated, it takes up more space and its volume increases
500
Name three ways that solids, liquids, and gases can change.
when heat is added, when heat is taken away, when they are mixed
500
Is making a mixture or solution a physical or chemical change? Explain.
Physical - chemical properties are not changing
500
Describe how a hot air balloon works. Include in your description what makes a hot air balloon rise and fall.
Air is heated and expands to take up space. The air becomes lighter and the hot air rises lifting the balloon. When the heat is removed, the hot air shrinks and becomes heavier. This causes the hot air balloon to fall.