States of Matter
In this state, particles are tightly packed and vibrate in place.
What is a solid?
This change happens when a solid turns directly into a gas without becoming a liquid first.
What is sublimation?
Matter usually does this when it gets warmer.
What is expand?
Sweat helps cool the body because it does this change of state.
What is evaporation?
A material that flows, takes the shape of its container, but does NOT expand to fill the whole container.
What is a liquid?
Explain what happens to particle movement during melting.
What is the particles gain energy, move faster, and break out of their fixed positions?
This is the measure of how fast particles are moving.
What is temperature?
Clouds form when warm air rises, cools, and water vapour changes to tiny liquid droplets. What phase change is involved?
What is condensation?
This state of matter has particles that move the fastest.
What is gas?
Frost forming on a window is an example of this state change.
What is deposition?
Why does a balloon shrink when placed in a freezer?
What is the gas particles slow down and move closer together, decreasing volume?
Explain why wet clothes dry faster on a sunny day.
What is the sun provides heat energy so particles move faster and evaporate more quickly?
Explain why gases can be compressed but liquids cannot.
What is because gas particles have large spaces between them, while liquid particles are close together?
This process happens when particles slow down so much that they lock into place and form a solid.
What is freezing?
The specific temperature at which a liquid becomes a gas quickly (boils).
What is the boiling point?
Why does ice float on water?
What is because frozen water expands, making it less dense than liquid water?
This rare state of matter exists in lightning and stars.
What is plasma?
A puddle disappears on a windy day faster than on a calm day. Explain using particle theory.
What is wind moves gas particles away, increasing evaporation since particles escape the liquid faster?
Explain why adding heat to ice doesn’t increase the temperature immediately when it starts melting.
What is the heat energy goes into breaking particle bonds instead of increasing temperature (latent heat)?
Helium balloons rise because of differences in this property.
What is density? (helium is less dense than air)