Physical properties and physical changes of substances revie

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