Chemistry 110 test 1

Percentage composition
% = (# of atoms)(amu of element)
————————-
(Formula Weight of Substance)
Combustion reactions
Rapid reactions that produce a flame
Combustion reaction of hydrocarbon
Hydrocarbon + O2 -> CO2 + H20
Names of Ionic Compounds/bonds
1) cation – anion
2) cation -ium; anion -ide
Cation
+ Charge
Anion
– Charge
Ion
When an election is removed or added to an atom, a charged particle is called an ion
Molecular compounds
Between nonmetals
Forms covalent bonds
6
C
12.0107
atomic # – # of protons or electron
symbol of element
mass number (# of protons and neutrons)
Isotopes
Atoms with the same element w/ different numbers of neutrons
Properties of matter
Physical or chemical (properties w/o ? or rxns)

Intensive or extensive (not based on amount or based on amount)

Ammonium
NH4+
Cyanide
CN–
Carbonate
CO3 2-
Phosphate
PO4 3-
Perchlorate
ClO4 –
Hydroxide
OH –
Nitrate
NO3 –
Hydrogen Carbonate
CHO3 –
Sulfate
SO4 2–
Acetate
CH3COO –
Density
Density = mass/volume