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Chapter 8 test cards
flashcards
29
Science
9th Grade
02/07/2012

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Term
Kinetic Theory of matter
Definition
The theory that all matter is made up of tiny particles that are in constant motion.
Term
Plasma
Definition
a gas-like mixture of positively charged particles
Term
Thermal expansion
Definition
A charachteristic of matter causing it to expand when heated and contract when cooled
Term
Polluted Water
Definition
Water that contains such high levels of unwanted paterials that it is unacceptable for drinking or other purposes.
Term
Heat of Vaporization
Definition
The amount of energy needed to change a material from a liquid state to a gaseous state
Term
Heat of fusion
Definition
The amount of energy needed to raise a material from a solid state to a liquid state
Term
Boyle's Law
Definition
If a gas is made smaller the pressure throughout the gas increases (if the temperature stays the same)
Term
Charles' Law
Definition
The volume of gas increses when temperature increases (if the pressure stays the same)
Term
Archimedes principle
Definition
The Buoyant force that pushes up on an object in a fluid is equal to the weight of the fluid displaced by the object.
Term
Bernoulli's principle
Definition
as the velocity of a fluid increases, the pressure exerted by the fluid decreases
Term
Pascals Principle
Definition
The pressure applied to a fluid that is transmitted evenly throughout the fluid
Term
Pressure
Definition
The amount of force exerted per unit of area; pressure= force divided by area
Term
Melting
Definition
Change from a solid to a liquid and gains KE
Term
Condensation
Definition
Change from a Gas to a liquid and loses KE
Term
Evaporization
Definition
Change from a liquid to a gas and gains KE
Term
Boiling
Definition
Change from a liquid to a gas and gains KE
Term
Vaporization
Definition
Changing from a liquid to a gas and gains KE
Term
Sublimation
Definition
Change from a solid to a gas and gains KE
Term
Freezing
Definition
change from a liquid to a solid and loses KE
Term
Solidification
Definition
Change from a liquid to a solid or a gas to a solid and loses KE
Term
Deposition
Definition
Change from a gas to a solid and loses KE.
Term
What are the 4 types of states, their particle spacing, shape, and volume
Definition

Gas= Farther apart/indefinite/indefinite

Liquid= farther apart/ indefinite/ definite

Solid= closer together/definite/definite

Plasma= farther apart/indefinite/indefinite

Term
List the 2 different types of solids
Definition

1. Crystalline

2. Amorphous

Term
Explain how an increase or decrease in heat affects particles in a sample of matter:
Definition

If there is an increase in heat the particles expand

If there is a decrease in heat the particles compress

Term
Why do objects float?
Definition
Buoyancy force is equal to weight
Term
Why do objects sink?
Definition
Buoyance force is less than the weight
Term
Give an example of pascals principle
Definition
Hydraulic lift
Term
Explain the venturi effect
Definition
In tall sky skrapers the windows can break because of so much pressure
Term
What is atmosperic pressure at sea level?
Definition
101.3 kilopascals
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