Jan 22, 2016
What are the Types of Chemical Reactions?1. Synthesis Reaction2. Decomposition Reaction3. Single Replacement Reaction4. Double Replacement Reaction5. Combustion Reaction
Synthesis Reactions (Combination Reactions)A chemical change in which 2 or more
substances form a single new substance.
Key = 1 product
General Equation: A + B C
ExamplesH2 + O2
K + Cl2
Mg + O2
Remember: BrINClHOF!!
ExamplesH2 + O2 H2O
K + Cl2 KCl
Mg + O2 MgO
Remember: BrINClHOF!!
Decomposition ReactionsA chemical change in which a single
compound breaks down into two or more simpler substances.
Opposite of synthesis reaction.
Key = 1 reactant
General Equation: A B + C
ExamplesH2O
KCl
H2O2
ExamplesH2O H2 + O2
KCl K + Cl2
H2O2 H2 + H2O
Single Replacement ReactionsA chemical change in which one element replaces
a second element in a compound.A cation must replace a cation, and an anion must
replace an anion.To determine if the reaction occurs, you must use
the activity series.
Key = 1 element & 1 compound as reactants
General Equation: A + BC B + AC or
A + BC C + AB
ExamplesCu + AgNO3
K + H2SO4
Na + LiCl
F2 + Na Cl
ExamplesCu + AgNO3 CuNO3 + Ag
K + H2SO4 K2SO4 + H2
Na + LiCl No Reaction
F2 + Na Cl NaF + Cl2
Double Replacement ReactionsA chemical change involving the exchange of
cations between two compounds.
Takes place in aqueous solution and must produce a precipitate, a gas, or a covalent compounds such as water.
To determine if the reaction occurs, you must use the solubility rules.
Key = 2 compounds as reactants
General Equation: AB + CD AD + CB
ExamplesCaSO4 + NaCl
KI + Pb(NO3) 2
BaBr2 + KCl
ExamplesCaSO4 + NaCl No Reaction
KI + Pb(NO3) 2 PbI2 + KNO3
BaBr2 + KCl No Reaction
Combustion ReactionA chemical change in which an element or
compound reacts with oxygen producing energy in the form of heat or light.
A hydrocarbon and oxygen are always the reactants.
Carbon dioxide and water are always products.
General Equation: CxHy + O2 CO2 + H2O
ExamplesCH4 + 2O2 CO2 + 2H2O
Types of Chemical Reactions Video
http://www.schooltube.com/video/0bbcb832f2344f27b996/Type-of-Chemical-Reactions