Balancing Equations
2Balance the equation of LiClO → Li2+Cl2+O4
4 LiClO → 2 Li2 + 2 Cl2 + O4
Identify the following type of reaction:
Ba2 + O2 → BaO
A Synthesis Reaction
A chemical reaction where two reactants combine to create a new, more complex product
What is a synthesis reaction?
An equation that has equal number of atoms of each element on both the sides of the equation.
What is a balanced equation?
Balance the equation and list the coefficients:
_ Ca(NO3)2 + _ KClO3 --> _ Ca(ClO3)2 + _ KNO3
Balancing:
1 Ca(NO3)2 + 2 KClO3 --> 1 Ca(ClO3)2 + 2 KNO3
Balance the equation of
KNO5 → KNO +O3
3 KNO5 → 3 KNO + 4 O3
Identify the following type of reaction:
Na + ZnBr2 --> NaBr + Zn2
Single Replacement Reaction
A reaction in which one element is substituted for another element in a compound.
What is a single replacement reaction?
Matter cannot be created or destroyed in chemical reactions.
What is the Law of Conservation of Mass?
Balance the equation and list the coefficients.
Ba2 + O2 → BaO
1 Ba2 + 1 O2 → 2 BaO
Balance the equation of
AgNO3 + RbCl → RbNO3 + Ag6Cl6
6 AgNO3 + 6 RbCl → 6 RbNO3 + 1 Ag6Cl6
Identify the type of reaction:
H2SO4 --> H + SO4
Decomposition
A type of chemical reaction in which one reactant yields two or more products.
What is a decomposition reaction?
A number placed in front of a molecular formula to balance a chemical equation.
What is a coefficient?
Show coefficients for balancing.
BaCl2 + Na2SO4 --> BaSO4 + NaCl
1 BaCl2 + 1 Na2SO4 --> 1 BaSO4 + 2 NaCl
Balance the equation of:
KMnO4 + BrClO2 --> KClO2 + Br3 + Mn + O2
3 KMnO4 + 3 BrClO2 --> 3 KClO2 + 1 Br3 + 3 Mn + 6 O2
Identify the following type of reaction:
K3PO4 + CaCl2 --> KCl + Ca3(PO4)2
Double Replacement
A reaction in which 2 compounds exchange elements or molecules with one another
What is a double replacement reaction?
A small sized number on the bottom right of the symbol. It refers to the number of atoms of the element.
What is a subscript?
Complete the equation and show answers for balancing.
HCl + Li2SO4 --> H2SO4 + LiCl
2 HCl + 1 Li2SO4 --> 1 H2SO4 + 2 LiCl
Balance the equation of:
C6H9O6 + ClO4 --> ClC12H18O12 + O18
18 C6H9O6 + 9 ClO4 --> 9 ClC12H18O12 + 2 O18
Identify the type of reaction:
C2H6O2 + O2 --> CO2 + H2O
Combustion
A fuel reacts quickly with oxygen (O2) and produces carbon dioxide (CO2) and water (H2O).
What is a combustion reaction?
The starting materials of a chemical reaction and are written on the left-hand side of the equation.
What are reactants?
Balance and list the coefficients.
NaNO3 + Pb(SO4)2 --> Na2SO4 + Pb(NO3)4
4 NaNO3 + 1 Pb(SO4)2 --> 2 Na2SO4 + 1 Pb(NO3)4