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Pressure
Vocabulary
Mental Math
Phase Changes
Solid, liquid or gas?
100
When volume decreases, what happens to pressure?
Pressure increases
100
This is mass divided by volume
Density
100
Density = mass / volume. If the mass is 10 g and the volume is 5 cm^3, what is the density?
2 g/cm^3
100
This is the phase change from solid to liquid
Melting
100
This state has no shape or defined volume
GAS
200
When force increases, what happens to pressure?
Pressure increases
200
What equals length x width x height?
Volume
200
Density = mass/volume. If the mass is 333 g and the volume is 3 cm^3, what is the density?
111 g/cm^3
200
This is the phase change from liquid to gas
Vaporization or Evaporation
200
This state cannot be poured
SOLID
300
If a balloon is placed over heat, what happens to the gas molecules inside of the balloon?
They speed up and could expand or pop the balloon
300
What property enables you to float a paper clip on water?
Surface tension
300
Volume = length x width x height. What is the volume of a cube if all sides are 2 cm?
8 centimeters cubed
300
This is the phase change from liquid to solid
freezing
300
This state has a defined volume but no defined shape
LIQUID
400
If the area increases, what happens to pressure?
Pressure decreases
400
What joins two molecules together?
Bonds
400
Volume= length x width x height. What is the volume of a pool if the length is 2 ft, width is 3 feet and height is .5 feet?
3 feet squared
400
This is the phase change from gas to liquid
Condensation
400
This state spreads and fills its container
GAS
500
What is the formula for pressure?
Pressure= force / area
500
This principle explains how force, pressure and area are related
Pascal's principle
500
Pressure = force/ area. What is the pressure if the force is 45 N, and the area is 5 cm cubed?
9 N/cm ^2
500
this is the phase change from solid directly to gas
sublimation
500
This state has a defined volume and defined shape
Solid