Science Review
The state of matter that has no definite shape or volume. gas
Changing from a gas to a liquid condensation
The changing of a liquid to a gas evaporation
The state of matter with a definite shape and volume solid
Anything that has mass and occupies space matter
The state of matter with a definite volume but no definite shape liquid
Particles are held rigidly in place Solid
Takes the shape of the container Liquid Gas
Has a definite shape solid
Particles are touching Solid, liquid
Particles slide over one another liquid
Particles are far apart gas
The freezing point of a substance is the same as its ….. melting
Evaporation changes a …. Liquid to a gas
Boiling water involves the same change of state as…. evaporation
How does heat affect the state of a substance?
Increasing the heat - Increases the motion of particles, which cause them to move further apart, causing the change in state
Decreasing the heat reverses the process
How does pressure change the state of a substance?
Increasing the pressure – forces the particles closer together
Decreasing has the reverse effect
In the 3 states, which particles are the closest? Solid
Which are the furthest apart? gas
In which state do the particles move the slowest? solid
The fastest? gas
How do you change a solid to a liquid? heating
Liquid to a solid? freeze
Liquid to a gas Heating until it evaporates
Gas to a liquid? Cooling it until it condenses
How is dew formed Water condenses in the cool of the night
At room temperature what is the state of the following items?
oxygen gas
iron solid
water liquid
sugar solid
helium gas
tissues solid
THE END