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Physical properties and physical changes of substances revie
Review for unit 3
32
Chemistry
11th Grade
10/20/2013

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Term
Qualitative
Definition
Non numerical info
Term
Quantitative
Definition
Numerical info
Term
Observation
Definition
Qualitative, collected with senses
Term
Data
Definition
Quantitative, experimentally determined or obtained from references
Term
Matter
Definition
Anything that has mass or takes up space
Term
Substance
Definition
Something with a unique and identifiable set of properties
Term
Chemical properties
Definition
the ability of a substance to undergo chemical change (new substance, by itself or with others)
Term
Physical properties
Definition
Change without creating a new substance (ex, color, melting)
Term
Extensive
Definition
Physical property, depends on the physical property, amount of substance that is present (ex, mass and volume)Not used to identify substances!!!
Term
Intensive
Definition
physical property, depends on the nature of the substance, not on how much (ex, density, melting temp) Used to identify substance!!!
Term
Solids
Definition
do not readily change shape, small changes in volume when heated or subjected to pressure
Term
Liquids
Definition
conform to shape of container, slight changes in volume when heated or subjected to pressure
Term
Gasses
Definition
Conform to shapes of the container, drastic changes in volume when heated or subjected to pressure
Term
Viscosity
Definition
resistance of a fluid to flow
Term
Diffusion
Definition
Intermingling of fluids as a result of motion within the fluid
Term
Vapor
Definition
gaseous material formed by evaporation of substance, boils above room temp.
Term
Vapor pressure
Definition
created by vapor evaporating from a liquid
Term
System
Definition
part of the universe being looked at
Term
Phase
Definition
solid, liquid, gas, or aqueous
Term
Solvent
Definition
LARGER QUANTITY, USUALLY A LIQUID
Term
solute
Definition
SMALLER QUANTITY, USUALLY A SOLID
Term
Homogenous substance
Definition
1 Phase
Term
Heterogeneous substance
Definition
two or more phages IS A MECHANICAL MIXTURE!!!
Term
Pure Substance
Definition
Homogenous, has a constant composition, ex oxygen, salt
Term
Homogenous MIXTURE
Definition
variable composition, IS A SOLUTION (ex, ice tea)
Term
element
Definition
1 type of atom: ex, oxygen
PURE SUBSTANCE
Term
compound
Definition
2 or more types of atoms; ex, salt
PURE SUBSTANCE
Term
Rotational energy
Definition
turning around
Term
vibrational energy
Definition
bonds moving. CHANGE IN BOND LENGTH
Term
translational energy
Definition
molecules moving one place to another, MOST IMPORTANT TO PHASE CHANGES
Term
miscible
Definition
will mix
Term
immiscible
Definition
will not mix
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