Vocab
Particle that has gained or lost an electron
Ion
An element with a full outer shell
He, Ne, Ar, Kr, Xe, Rn
Compounds formed by the gain or loss of electrons
Ionic
KCl
potassium chloride
Strontium Chloride
SrCl2
No visible differences
Homogeneous
A regular variation in the properties of elements
Periodic trend
Compounds formed by sharing electrons
Covalent
CaSO4
Calcium Sulphate
Ammonium Dichromate
(NH4)2Cr2O7
Can be beaten into sheets
Malleable
Decreases as you move across a row, increases as you move down a column on the periodic table
Atomic size
Regular repeating patterns
Lattice
(NH4)3N
Ammonium Nitride
Dinitrogen Trioxide
N2O3
More than one possible chage
Multivalent
An element with 3 valence electrons
B, Al, Ga, In, Tl
Element that makes diamonds and graphite
Carbon
PBr5
Phosphorus pentabromide
Manganese (IV) Sulphide
MnS2
Attraction between positive and negative charges that hold compounds together
Ionic bond
Location of protons and neutrons
Nucleus
Bond made between two non-metal atoms
Covalent
Ni2(SO4)3
Nickel (III) Sulfate
Niobium (V) Nitride
Nb3N5