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Chapter 2
Chemistry
28
Chemistry
10th Grade
09/01/2010

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Term
Mass
Definition

 

The measure of the amount of matter that an object contains

 

Term
Volume
Definition
The measure of space occupied by a sample of matter
Term
Extensive Property
Definition
Property that depends on the amount of matter in a sample
Term
Intensive property
Definition
Property that depends on the type of matter in a sample
Term
Substance
Definition
Matter that has a uniform composition, either an element or a compound
Term
Physical property
Definition
a quality or condition of a substance that can be observed or measured without changing the composition
Term
Solid
Definition
Has definite shape and volume
Term
Liquid
Definition
Indefinite shape same volume
Term
Gas
Definition
takes the shape form, and volume of the container 
Term
vapor
Definition
the gaseous state of a substance that is normally a liquid or solid 
Term
Physical Change
Definition
A change during which some properties of the material change but not the composition 
Term
Mixture
Definition
physical blend of two or more components
Term
Heterogeneous Mixture
Definition
A mixture that is not uniform in composition 
Term
Homogeneous mixture
Definition
mixture that is uniform in composition 
Term
Solution 
Definition

a homogeneous mixture, consists of solutes dissolved in a solvent

Term
Phase
Definition
any part of a sample with uniform composition and properties
Term
Filtration
Definition
a process that separates a solid from a liquid
Term
distilation
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
Element
Definition
The simplest form of matter that has a unique set of properties 
Term
Compound
Definition
a substance that contains two or more elements chemically combined 
Term
Chemical Change
Definition
A change that produces matter with a different composition than the original matter
Term
Chemical Symbol
Definition
A one- or two letter representation of an element
Term
Chemical property
Definition
the ability of a substance to undergo a specific chemical change
Term
Chemical reaction
Definition
a change in which one or more reactants change into one or more products characterized by the breaking of bonds in reactants and the formation of bonds in products
Term
Reactant
Definition
a substance present at the start of a reaction
Term
Product
Definition
A substance produced in a chemical reaction
Term
Precipitate
Definition
a solid that forms and settles out of a liquid mixture
Term
Law of Conservation of Mass
Definition
in any physical change or chemical reaction, mass is conserved, mass can neither be created nor destroyed
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