General Chem 1 - Ch. 2 Atoms, Molecules, and Ions
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113 Terms
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element
a substance whose atoms all have the same atomic number
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atom
mostly empty space with very, tiny dense nucleus
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neutral particle
number of particles = number of electrons
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compound
two or more elements chemically bonded together
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pure substance
substances that are made up of only one kind of particle and have a fixed or constant structure
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atomic number
total number of protons of an atom
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mass number
total number of protons AND neutrons in an atom
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isotope
atoms of the same element with different mass numbers
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atomic mass unit (amu)
SI unit of individual atoms.
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1 amu
1\.660539 x 10^-27 kg
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dalton (Da)
non-SI unit of individual atoms
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ion
charged particle (number of protons donāt equal number of neutrons)
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cation
positive charged ions
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anion
negative charged ions
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group
column of elements in the periodic table
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period
row of elements in the periodic table
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metals
left of the period table ladder
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Ag
silver
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Al
aluminum
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Ar
Argon
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As
Arsenic
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Au
gold
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B
boron
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Be
Beryllium
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Br
bromine
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C
carbon
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Ca
calcium
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Cl
chlorine
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Co
cobalt
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Cr
chromium
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Cs
cesium
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Cu
copper
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F
flourine
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Fe
iron
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Ga
gallium
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Ge
germanium
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H
hydrogen
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He
helium
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Hg
mercury
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I
iodine
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K
potassium
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Kr
krypton
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Li
lithium
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Mg
magnesium
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Mn
manganese
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Mo
molybdenum
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N
nitrogen
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Na
sodium
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Ne
neon
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Ni
nickel
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O
oxygen
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P
phosphorus
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Pb
lead
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Pt
platinum
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Rb
rubidium
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Rn
radon
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S
sulfur
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Sb
antimony
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Sc
scandium
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Se
serenum
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Si
silicon
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Sn
tin
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Sr
strontium
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Te
tellurium
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Ti
titanium
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U
uranium
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V
vanadium
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W
tungsten
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Xe
xenon
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Zn
zinc
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iron (II)
Fe^2+
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iron (III)
Fe^3+
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copper (I)
Cu^+
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copper (II)
Cu^2+
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tin (II)
Sn^2+
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tin (IV)
Sn^4+
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polyatomic cations
ammonium
hydronium
mercury (I)
hydronium
mercury (I)
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ammonium
NH4^-
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hydronium
H3O^3+
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mercury (I)
Hg2^2+
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polyatomic anions ending in ā-ideā
hydroxide OH^-
cyanide CN^-
peroxide O2^2-
azide N3^-
cyanide CN^-
peroxide O2^2-
azide N3^-
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hydroxide
OH^-
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cyanide
CN^-
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peroxide
O2^2-
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azide
N3^-
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acetate
C2H3O2^-
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chlorate
ClO3^-
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nitrate
NO3^-
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permanganate
MnO4^-
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carbonate
CO3^2-
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sulfate
SO4^2-
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chromate
CrO4^2-
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dichromate
Cr2O7^2-
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thiosulfate
S2O3^2-
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phosphate
PO4^3-
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nitrite
NO2^-
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sulfite
SO3^2-
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perchlorate
ClO4^-
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chlorite
ClO2^-
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hypochlorite
ClO^-
Note 
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