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chpt9 lesson 3


temperature a measurment of how hot or cold something is
sublimation occurs when a substance changes directly from a solid to a gas without going through a liquid state
melting point the temperature at which the solid melts to become a liquid
freezing point the temperature at which a liquid freezes
boiling point the temperature at which a liquid becomes a gas
vaporization the process by which a liquid changes to a gas
pressure the force exerted by the gas
physical change altering the size,shape, or state of a substance without forming a new substance
matter can exist as a _________, ____________, or _______. solid, liquid, gas
The ________ of a gas is affected by temperature and pressure volume
Ice cubes left in your freezer for a long period of time will become _______ and eventually "____________". smaller;disappear
During evaporation what happens? the water molecules absorb energy.
The molecules do what, during evaporation? They move faster and farther apart and escape from the liquid.
After the molecules separate during evaporation what happens next? The water vapor condenses into liquid water and energy is released.
What happens when energy is removed during evaporation? The molecules slow down and move closer together to become a liquid again.
If you put a balloon in cold water what happens? it shrinks
Created by: moncheechee19