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30 Cards in this Set

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