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72 Cards in this Set

  • Front
  • Back
The Scientific Method-
systematic approach to research (ovservation-representation-interpretation)
Hypothesis-
a tentative explanation for a set of observations
Law-
a consice statement of a realtionship between phenomena that is always the same under all conditions
Chemistry-
the study of matter and the changes it undergoes
Matter-
anything that occupies space and has mass
Substance-
form of matter that has definite composition and distince properties
Mixture-
combination of 2 or more substances in which the substances reatain their distinct identities
Homogenous Mixture-
Composition of the mixture is same throughout
Heterogenous Mixture-
Composition is not uniform throughout
Physical Means-
can be used to separate a mixture into its components (distillation)
Element-
a substance that cannot be separated into simpler substances by shemical means
-113
Compound-
a substance composed of atoms of 2 or more differentslements chemically united in fixed proportions
Physical Change-
does not alter the comp. of a substance
Chemical Change-
alters the composition or identity of a substance (hydrogen burns in air to form water)
Extensive Property-
Material depends on how much matter is being considered
-mass, length, volume
Intensive Propery-
Material does not depend on how much matter is being considered
-color, density, temp.
Matter-
anything that occupies space and has mass
Mass-
measure of the quantity of mass
What is the SI unit of mass?
(formula)
Kilogram
1 Kg = 1000g =1 x 10^3g
Weight-
force that gravity exerts on an object (depends on gravity)
Name of unit and Symbol for each:
Length-
meter
m
Mass
kilogram
kg
Time
second
s
Electrical Current
ampere
A
Temperature
kelvin
K
amount of substance
mole
mol
Luminous intensity
candela
cd
Symbol and meaning for the following (prifixes used with SI units)
Tera-
T
1000000000000 or 10^12
Giga-
G
1000000000 or 10^9
Mega-
M
1000000 or 10 ^6
Kilo-
k
1000 or 10^3
Deci-
d
1/10 or 10 ^-1
Centi
c
1/100 or 10^-2
Milli
m
1/1000 or 10^-3
Micro
(u)
1/1000000 or 10^-6
Nano
n
1/1000000000 or 10 ^-9
Pico
p
1/1000000000000 or 10^-12
Volume-
SI derived unit for volume is cubic meter (m^3)
Density-
mass
_____
volume
Give symbol for each element:
Aluminum
Al
Arsenic
As
Barium
Ba
Bismuth
Bi
Bromine
Br
Calcium
Ca
Carbon
C
Chlorine
Cl
Chromuim
Cr
Cobalt
Co
Copper
Cu
Fluorine
F
Gold
Au
Hydrogen
H
Iodine
I
Iron
Fe
Lead
Pb
Magnesium
Mg
Manganese
Mn
Mercury
Hg
Nickel
Ni
Nitrogen
N
Oxygen
O
Phosphorus
P
Platinum
Pt
Potassium
K
Silicon
Si
Silver
Ag
Sodium
Na
Sulfur
S
Tin
Sn
Tungsten
W
Zinc
Zn