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Solids, Liquids, and Gases
RAMS - Chapter 2 Blue Book - Solids, Liquids, and Gases
27
Science
6th Grade
12/21/2009

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Term
What are the three "familiar" states of matter?
Definition
Solids, Liquids, and gases
Term
Describe the shape and volume of a solid.
Definition
Solids have a DEFINITE shape and DEFINITE volume.
Term
Describe the shape and volume of a liquid.
Definition
Liquids DO NOT have a definite shape but DO have a definite volume.
Term
Describe the shape and volume of a gas.
Definition
The shape and volume of a gas are both NOT DEFINITE.
Term
Give some examples of solids.
Definition
Diamonds, bricks, logs, and silverware
Term
Give some examples of liquids.
Definition
Gasoline, water, milk, and Kool-Aid.
Term
Give examples of gases.
Definition
Oxygen, hydrogen, helium, and radon
Term
What will a gas do that a solid and liquid will not?
Definition
Expand to fill the space available to it.
Term
The process in which a gas cools and becomes a liquid is called?
Definition
condensation
Term
According to Boyle's law, the volume of a gas INCREASES when its?
Definition
pressure decreases
Term
What does the vertical axis of a graph show?
Definition
the responding variable
Term
TRUE/FALSE? Rubber and glass, which become softer as they are heated, are examples of crystalline solids.
Definition
False! They are amorphous solids.
Term
TRUE/FALSE? When you see steam,fog, or clouds, you are seeing water in the liquid state.
Definition
True
Term
TRUE/FALSE? A substance changes from a solid to a liquid at its boiling point.
Definition
False. It is its MELTING POINT, not the boiling point.
Term
TRUE/FALSE? The volume of a gas is the force of its outward push divided by the area of the walls of the container.
Definition
False. It is not volume, it is pressure.
Term
TRUE/FALSE? According to Boyle's law, the volume of a gas varies inversely with pressure.
Definition
True
Term
Describe the motion of the particles in a solid.
Definition
Particles in a solid vibrate in place.
Term
Why are both liquids and gases called fluids?
Definition
Both liquids and gases have freely moving particles that can flow from place to place.
Term
Compare and contrast liquids with high and low viscosities.
Definition
All liquids flow. However, liquids with high viscosity flow more slowly than liquids with low viscosity.
Term
How is the thermal energy of a substance related to its physical state?
Definition
As thermal energy increases, matter changes from solid to liquid and from liquid to gas.
Term
Describe four examples of changes of state.
Definition
1. Ice melting is solid to liquid.
2. Water freezing is liquid to solid.
3. Water boiling is liquid to gas.
4. Clouds forming is gas to liquid.
Term
What happens to water molecules when water is heated from 90 degrees Celsius to 110 degrees Celsius?
Definition
Water molecules gain enough energy to become a gas.
Term
What happens to the gas particles when the air in an inflated ball leaks out?
Definition
The gas particles inside the ball are at a higher pressure than the air outside the ball, so they hit the inner surface of the ball more often, reach the hole, and escape. Then the gas particles move away from one another as they leak out of the ball.
Term
How does heating a gas in a rigid container change its pressure?
Definition
The pressure of the gas increases.
Term
Explain why placing a dented table-tennis ball in boiling water is one way to remove the dent in the ball. (Assume the ball has no holes.)
Definition
Heating the table-tennis ball causes the air inside it to expand and push the dent out of the ball.
Term
When you open a solid room air freshener, the solid slowly loses mass and volume. How do you think this happens?
Definition
Through sublimation, the solid turns into a gas as the room freshener's particles escape and mix with the air in the room.
Term
What is the formula for pressure?
Definition
Pressure = force/area
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