Types of Chemical Reactions

5 Types of Chemical Reactions1) Synthesis Reaction2) Decomposition Reaction3) Single Displacement Reaction4) Double Displacement Reaction5) Combustion Reaction

Synthesis ReactionGenerally:Element + Element/Compound Compound

Example:

4Fe(s) + 3O2(g) 2Fe2O3(s)

Synthesis Reaction (cont.)A synthesis reaction will look like this:

The formula that represents a synthesis reactions is:

A + B AB

Synthesis Reaction (cont.) Identify which of the following reactions

are synthesis reactions:1) 2Na + Cl2 2NaCl ☺2) HCl + NaOH NaCl + H2O3) 2Mg + O2 2MgO ☺4) 4Cu + O2 2Cu2O ☺5) 6CO2 + 6H2O C6H12O6 + 6O2

Decomposition ReactionGenerally:

Compound less complex compound + compound

A decomposition reaction will look like this:

Decomposition Reaction (cont.)The formula that represents a decomposition

reaction:AB A + B

Identify which of the following reactions are decomposition reactions:

1) 2Na + Cl2 2NaCl2) HCl + NaOH NaCl + H2O3) 2FeCl3 2Fe + 3Cl2 ☺4) 2CuO Cu + O2 ☺

Single Displacement ReactionsGenerally:Element + Compound Compound + Element

Single displacement reactions look like this:

Single Displacement Reactions (cont.)The formula for a single displacement reaction looks like this:

A + BC AC + B

Identify which of the following reactions are single displacement:1) 2Na + Cl2 2NaCl2) AgNO + Cu CuNO + Ag ☺3) 2Mg + O2 2MgO4) Cu + HNO3 Cu(NO3)2 + H2 ☺5) Zn + 2HCl ZnCl2 + H2 ☺

Double Displacement ReactionGenerally:Compound + Compound Compound + Compound

Double displacement reactions look like this:

Double Displacement Reaction (cont.)The formula for a double displacement reaction is:

AB + CD AD + CB

Identify which of the following reactions are double displacement reactions:

1) Zn + 2HCl ZnCl2 + H2

2) LiNO3 + NaOH LiOH + NaNO3 ☺ 3) 2KCl + MgO MgCl2 + K2O ☺4) Mg + S MgS5) 2H2O2 2H2O + O2

Combustion Reaction A combustion reaction is when a hydrocarbon

reacts with oxygen. A hydrocarbon is any compound that is made up of hydrogen and carbon. Some hydrocarbons also have oxygen atoms in them.

The products are always carbon dioxide and water vapour

Combustion Reaction (cont.)The formula for a combustion reaction is:

Some H, C and/or O compound + O2(g) H2O(g) + CO2(g)

Combustion Reaction (cont.)Identify which of the following reactions are

combustion reactions:

1) CH4 + 2O2 CO2 + 2H2O ☺2) HCl + NaOH NaCl + H2O3) C2O2H4 + 2O2 2CO2 + 2H2O ☺4) 4Cu + O2 2Cu2O5) CO2 + 6H2O C6H12O6 + 6O2