Objective: To identify the five types of chemical equations.
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Transcript of Objective: To identify the five types of chemical equations.
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