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exam vocab-3rd marking period
mr. v. 3rd marking period
41
Science
9th Grade
03/27/2006

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Term
Matter
Definition
anything that takes up space and has mass (ch. 8)
Term
Plasma
Definition
gas like mixture of charged particals that exists at extremely high temps. (ch. 8)
Term
density
Definition
mass per unit volume of a material (ch. 8)
Term
density
Definition
mass per unit volume of a material (ch. 8)
Term
melting
Definition
changin of a substance from a solid state to a liquid state when heated abotu the substance's freezing/melting point
Term
freezing
Definition
the changing of state from a liquid to a solid-opp. of melting
Term
heat of fusion
Definition
the amount of energy needed to change a material from the solid state to the liquid state
Term
heat of vaporization
Definition
the amount of energy needed to change a material from a liquid to a gas
Term
sublimation
Definition
process in which a solid changes to a vapor w/ out turning to a liquid
Term
kinetic theory
Definition
all matter si made up of constantly moving, tiny particals
Term
condensation
Definition
change of a substance from gas to liquid
Term
vaporization
Definition
changing of a substance from liquid to gas
Term
thermal expansion
Definition
a characteristic of almost all matter that causes it to expand when heated and contract when cooled
Term
substance
Definition
matter that is an element or compound
Term
compound
Definition
substance made of the combined atoms of two or more elements
Term
mixture
Definition
a material made of elements or compounds stirred together but not combined chemically
Term
homogeneous
Definition
a mixture in which diff. materials are blended evenly so that the mixture is the same throughout,aka soulution
Term
heterogeneous
Definition
a mixture in which diff. parts can be easily distinguished
Term
solution
Definition
aka homogeneous
Term
suspension
Definition
heterogeneous mixture containin a liquid in which larger particals eventually settle to the bottem
Term
colliod
Definition
heterogeneous mixture containing tiny particals that never settle, ex. milk and gelatin
Term
alloy
Definition
mixture consisting of a metal and one or more elements
Term
element
Definition
substance in which all atoms are alike
Term
law of conservation of mass
Definition
mass can not be created nor destroyed
Term
atoms
Definition
partical made up of a nucleus, protons, neutrons, and electrons
Term
organic
Definition
most chemicals that contain the element carbon
Term
quarks
Definition
small particles of matter htat make up protons and neutrons
Term
hydrocarbons
Definition
a compound w/ only carbon and hydrogen
Term
saturated
Definition
a hydrocarbon that contains only single-bonded carbon atoms
Term
unsaturated
Definition
a hydrocarbon w/ single and double bonded atoms
Term
lipids/fatty acids
Definition
fats, oils, and related organic compounds
Term
carbohydrates
Definition
an organic compound having twice as many hydrogn atoms as oxygen atoms
Term
proteins
Definition
organic polymerformed from amino acids
Term
polymers
Definition
a huge molecule made up of many smaller organic molecules, called monomers, that have formed new bonds and are linked together
Term
isomers
Definition
compounds that have identical chemical formulas but different molecular structures
Term
1
Definition
methyl
Term
2
Definition
ethyl
Term
3
Definition
propl
Term
4
Definition
but(ane)
Term
chemical reaction
Definition
a change in which one or more substances are converted to different substances
Term
reaction types
Definition
1. synthesis
2. decomposition
3. combustion
4. single replace
5. double replace
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