The basics
The name for a number you place in front of a chemical species to balance a reaction
Coefficient
Number of each type of atom:
CO2
C - 1
O - 2
Calcium Chloride
CaCl2
__ N2 + __ H2 ⇨ __ NH3
1 3 2
How many oxygen atoms are this side of a reaction
⇨ 2 NaOH + H2
4
What is the name for the chemical formulas after the reaction takes place (right side of the equation)
Products
Number of each type of atom:
Ca(OH)2
Ca - 1
O - 2
H - 2
Potassium Sulfate
K2SO4
__ K + __ H2O ⇨ __ KOH + H2
2 2 2 1
How many oxygen atoms are this side of a reaction
⇨ P2O5 + 3 H2O
8
What is the name for the chemical formulas you have before the reaction takes place (left side of the equations)
Reactants
Number of each type of atom:
Mg(NO3)2
Mg - 1
N - 2
O - 6
Magnesium Nitrate
Mg(NO3)2
__ AlBr3 + __ I2 ⇨ __ AlI3 + __ Br2
2 3 2 3
How many oxygen atoms are this side of a reaction
⇨ 12 CO2 + 6 H2O
30
What law requires us to balance chemical reactions
law of conservation of matter
Number of each type of atom:
3 Ca(OH)2
Ca - 3
O - 6
H - 6
Sodium Oxalate
Na2C2O4
__ FeCl3 + __ NaOH ⇨ __ Fe(OH)3 + __ NaCl
1 3 1 3
How many lithium atoms are this side of a reaction
3 LiNO3 + 10 Li ⇨
13
Name for a small letter(s) in parenthesis after the formula that describes the state of the chemical
Phase Indicator
Number of each type of atom:
2 Mg(NO3)2
Mg - 2
N - 4
O - 12
Ammonium Carbonate
(NH4)2CO3
__C4H10 + __O2 ⇨ __CO2 + __H2O
2 13 8 10
How many oxygen atoms are in this side of a reaction
⇨ Bi2(SO4)3 + 2 Al(NO3)3
30