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States of Matter
General Science
15
Science
9th Grade
10/07/2008

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Cards

Term
Describe a solid.
(What kind of shape and volume do they have?)
Definition
Solids have definite shapes and definite volumes.
Term
What is the term that means a substance will not change its shape or volume when it's moved from one container to another.
Definition
"Definite".
Term
Describe a liquid.
(What kind of shape and volume do they have?)
Definition
Liquids have no definite shape, but they do have a definite volume.
Term
Describe how the atoms in a solid are arranged.
Definition
The atoms are packed very close together and are in an orderly arrangement.
Term
Describe how the atoms in a liquid are arranged.
Definition
The atoms are packed close together but in a random arranged. They slide past one another.
Term
Describe a gas.
(What kind of shape and volume do they have?)
Definition
Gases have no definite shape and no definite volume (small amounts will always spread to fit it's container).
Term
Describe how the atoms in a gas are arranged.
Definition
There is a lot of space between gas atoms and they are at random locations within their container.
Term
Describe plasma.
Definition
Plasma is rare on Earth, but the most common type of matter in the universe. It exists at extremely high temperatures.
Term
What is the fifth state of matter and under what conditions can it exist?
Definition
Bose-Einstein Condensate, where the atom behaves as a single particle. It exists at extremely low temperatures (-273 C)
Term
What does the Kinetic Theory say about the motion of atoms?
Definition
All particles of matter are in constant motion.
Term
True or False.
The particles of a gas are at rest.
Definition
False. The particles of a gas are moving the fastest.
Term
What can happen to the kinetic energy of two atoms when they collide?
Definition
One atom may lose energy and slow down, while the other atom may gain energy and speed up.
Term
There are forces of __________ among all particles in matter.
Definition
There are forces of attraction among all particles in matter.
Term
Under normal conditions, scientists can ignore the forces of attraction in a gas. Why?
Definition
Because the gas particles are apart and moving fast, so the forces are too weak to have an effect.
Term
What does the kinetic theory of gases say about a gas in a container?
Definition
The constant motion of gas allows it to always fill a container of any shape or size.
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