Temperature - Warren County Schools

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Not the same as heat!!!
Heat
Form of energy
 Quantity of energy within
a system
 Heat flows from higher
temp to lower temp

Temperature
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Measure of intensity of
heat
SI unit for temp is Kelvin
No degree symbol for
Kelvin
K
K , °C, °F
Mixture


Retain individual properties
May be physically separated
 Filtration
 Magnet
 Centrifuge






solution
Sift
Distillation
Fractional distillation
Chromatography
Electrophoresis
size
Evaporation
solids from suspension
magnetic
suspended from
large from small
solvent from solution
separate alcohol
colors
molecules based on
solute from solution
Element
Can not be broken down
 Found on the periodic table
 Simplest form
 Building block of all substances

Compound
Combination of two or more elements
 Can not be separated by physical
means
 Do not retain properties of their
individual elements

Molecule
Smallest uncharged individual unit of a
compound
 Formed by two or more atoms joined
together
 Water
 All compounds are molecules but not all
molecules are compounds

Mixture


Homogeneous
Uniform


Heterogeneous
Two or more phases
Properties
Physical
 Color
 Taste
 Odor
 Physical existence
 State of matter
 Mp
 Density
 Bp
Chemical
 Ability of substance to
form a new substance
Changes
Physical
Chemical
 Changes in physical
 New substance is formed
properties
 Different set of properties
 Change in state of matter
 No new substance is
formed
Intensive Properties
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Do not depend on the
amount of matter
Color Odor Luster
Malleability
Ductility
Conductivity
Hardness
Melting/Freezing Point
Boiling Point
Density
Extensive Properties
Depend on the amount
of matter
 Mass
 Weight
 Volume
 Length

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