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Chapter 2 Vocab
Chemistry Chap.2 Vocabulary
24
Chemistry
12th Grade
09/06/2007

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Term
mass
Definition
measure of the amount of matter an object contains
Term
volume
Definition
measure of the space occupied by the object
Term
extensive property
Definition
a property that depends on the amount of matter in a sample
Term
intensive property
Definition
a property that depends on the type of matter in a sample, not the amount of matter
Term
substance
Definition
matter that has a uniform and definite composition
Term
physical property
Definition
a quality of condition of a substances' composition
Term
solid
Definition
a form of matter that has a definite shape and volume
Term
liquid
Definition
a form of matter that has an indefinite shape, flows, yet has a fixed volume
Term
gas
Definition
a form of matter that takes both the shape and volume of its container
Term
vapor
Definition
describes the gaseous state of a substance that is generally a liquid or solid at room temperature, as in water vapor
Term
physical change
Definition
a change during which some properties of a material change, but the compostion of the material does not change
Term
mixture
Definition
a physical blend of two or more components
Term
heterogeneous mixture
Definition
a mixture in which the composition is not uniform throughout
Term
homogeneous mixture
Definition
a mixture in wich the composition is uniform throughout
Term
solution
Definition
a homogeneous mixture; consists of solutes dissolved in solvent
Term
phase
Definition
any part of a sample with uniform composition and properties
Term
filtration
Definition
process that separates a solid from the liquid in a heterogeneous mixture
Term
distillation
Definition
a process used to separate dissolved solids from a liquid, which is boiled to produce a vapor that is then condensed into a liquid
Term
chemical property
Definition
the ability of a substance to undergo a specific chemical change
Term
chemical reaction
Definition
a chemical change when one or more substances change into one or more new substances
Term
reactant
Definition
a substance present at the start of the reaction
Term
product
Definition
a substance produced in the reaction
Term
precipitate
Definition
a solid that forms and settles out of a liquid mixture
Term
law of conservation mass
Definition
states that in any physical change or chemical reaction, mass is conserved
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