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Chem Chapter 2
vocab
23
Chemistry
11th Grade
09/18/2012

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Term
Matter
Definition
anything that takes up space and has mass
Term
Mass
Definition
the amount of matter the object contains
Term
Substance
Definition
matter that has a uniform and definite composition
Term
Physical Property
Definition
a quality or condition of a substance that can be measured without changing the substance's composition
Term
Solid
Definition
matter that has definate shape and volume
Term
Liquid
Definition
a form of matter that flows
Term
Gas
Definition
a form of matter that takes both the shape and volume of the container
Term
Vapor
Definition
the gaseous state of a substance that is generally a liquid or a solid at room temperature
Term
Physical Change
Definition
a change which alters a given material without changing its composition
Term
Mixture
Definition
a physical blend of two or more substances
Term
Homogeneous Mixture
Definition
a mixture that is completely uniform in composition or a SOLUTION
Term
Heterogenerous Mixture
Definition
a mixture that is not uniform in composition
Term
Phase
Definition
any part of a system with uniform composition and properties
Term
Compounds
Definition
substances that can be separated into simpler substances only by chemical means
Term
Chemical Symbol
Definition
a representation for each element by one or two letters
Term
Elements
Definition
simplest form of matter that can exist under normal laboratory conditions
Term
Reactants
Definition
starting substances
Term
Chemical Reaction
Definition
one or more substances change into new substances
Term
Chemical Property
Definition
the ability of a substance to undergo a chemical reaction and to form new substances
Term
Products
Definition
the substances formed
Term
law of conservation of mass
Definition
in any physical change or chemical reaction, mass is neither created nor destroyed; it is conserved
Term
solution
Definition
a homogeneous mixture
Term
distillation
Definition
when a liquid is boiled to produce a vapor that is then condensed to a liquid
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