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30 Cards in this Set
- Front
- Back
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Mega
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metric prefix for 1 million time the base unit
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Giga
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metric prefix for 1 billion times the base unit
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density
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the amount of matter in a certain volume. Equals mass divided by volume.
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Gravity
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the force of attraction between two objects due to their mass
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newton
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SI unit of Force
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Physical Change
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a change in matter in which nothing new is formed but it is a change in size, shape or appearance.
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Chemical Change
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a change in matter in which new products form and usually energy is taken in or released. Usually can not get the original matter back again.
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States of Matter
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the way matter exists. The 4 of these are: Liquid, solid, gas, plasma
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solid
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The atoms are close together and move slow with a definite shape, volume, and mass
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Change of state
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the physical change from one state of matter to another caused by adding or taking away heat energy
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liquid
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The atoms are more apart and free to flow with a definite volume and mass but no definite shape.
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Melting
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the change from a solid to a liquid
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gas
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The atoms are very far apart and fast moving with no definite volume or shape.
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Freezing
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the change from a liquid to a solid
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Plasma
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a very high temperature gas with charged particles found on the sun.
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Boyle's Law of Gas
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states that the higher the PRESSURE the lower the volume of the gas and the lower the PRESSURE the higher the volume of a gas (BP)
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Charles' Law of Gas
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states that the lower the TEMPERATURE the lower the volume of the gas and the higher the TEMPERATURE the higher the volume of the gas
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Vaporization
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the change from a liquid to a gas
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Condensation
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the change from a gas to a liquid
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Sublimation
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the change from a solid to a gas skipping the liquid state
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Boiling
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the change of state from a liquid to gas that occurs throughout the entire liquid
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Evaporation
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the change of state from a liquid to a gas that occurs ONLY at the surface of a liquid
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Elements
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substances that are pure and can not be separated into other substances
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Metals
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Hard, shiny materials that are usually good conductors
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non metals
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soft, brittle, dull colored materials that are usually poor conductors
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Metalloids
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materials that have properties of both metals and nonmetals found touching the zigzag line
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compound
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made by a combination of two or more bonded elements.
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mixture
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made by physically joining two or more elements. Nothing new is formed. No definite formula.
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atom
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the smallest particle into which an element can be divided and still be the same substance
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nucleus
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the dense center part of an atom containing the protons and neutrons
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