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48 Cards in this Set
- Front
- Back
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anything that has mass and volume
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matter
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matter can be either a __ or ___
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pure substance or mixture
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pure substances can be __ or ___
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elements compounds
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each pure substance has a unique set of ___ and ___ properties
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chemical physical
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substance thtat cannot be seperated into simplier substances by a chemical change
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elements
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more than __ elements are known
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100
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elements can be __ ___ or ___
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metals nonmetals and metalloids
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malleable, ductile, good conductors of heat & electricity, most are solid at room temp
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metals
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most are gases at room temperature
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nonmetals
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two or more elements chemically combined
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compounds
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elements are always in a ____
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fixed proportion
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compounds can be __ or __
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ionic or covalent
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compounds and elemnts are both
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pure substances
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__ can be broken down into similar substances, __ cant
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compounds
elements |
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blend of two or more pure substancs
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mixture
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properties of ___ reflect substances they contain, __ may not
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mixxtures
compounds |
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__ components vary in proportion; __ components are always present in same proportion
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mixture
compound |
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___ can be seperated by physical means; ___ must be seperated by chemical means
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mixture
compound |
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matter can be neither created nor destroyed in any process
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law of conservation of mass
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explains how temperatrue and pressure affect matter
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kinetic theory
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major assumptions
all matters are ocmposed of _____ these particles are in constant ____ collisions between particles are perfectly __ |
small particles
motion elastic |
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states of matter
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solid liquid gas plasma
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substances exsist in certain states depending on the amount of __ between the clesparticles
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motion
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the higher the ___ the greater the motion between the particles
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temperature
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adding or subtracting ___ changes matter from one state to another
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heat
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solids have a definite
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shape and volume
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solids molecules have structure and are packed ___ together
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tightly
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solids molecules ___ and ___ but do not change posistion
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vibrate and rotate
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liquids have a definite __ but not ___
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volume
shape |
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liquids molecules are close together but can __-
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move
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gases have no defnite
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shape or volume
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list strongest to weakest attraction
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solid liquid gas
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highest to lowest energy
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gas liquid solid
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condenstation point is from ___ to ___
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gas to liquid
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sublimation is from __ to ___
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solid to gas
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three ways to seperate soild-liquid mixtures
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decanting filtration evaportation
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2 ways to seperate liquid mixtures
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distiliation and manipulating their differences in boiling point
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3 ways to seperate solid solid mixtures
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use differences in physical properties
magnets dissolving |
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one way to seperate liquid-gas mixtures
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increase temperature
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2 ways to sep gas-gas mixtures
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condensation
sep gasses in liquid based on differences in condensation point |
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two various ways to sep mixtures
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centrifuge chromatography
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a charecteristiic of a substance that cn be observed without changing its identity
can be used to seperate mixtures |
physical property
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describes the ability of a substance to undergo changes in identity
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chemical property
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a change in the form of a substance without changing its identity
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physical change
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physical change
properties remain ___ it is ___ phys properties can be used to seperate ___ |
same
reversible mixtures |
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takes place when a substance reacts and forms one or more new substances
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chemical change
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chemical change
properties ___ and it is ___ |
change
irreversible |
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evidence of chemical change
___ change ___ production formation of a ___ change in ____ |
color
gas precipitate temp |
