1. TYPES OF CHEMICAL REACTIONS

2. There are FIVE main types of chemical reactions
Synthesis Reaction
Decomposition Reaction
Single Replacement Reaction
Double Replacement Reaction
Combustion Reaction

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4. Synthesis Reactions EX: 4 Al + 3 O2 2 Al2O3 2 Na + Cl2 2 NaCl
Two reactants combine to form ONE product
“Addition” reaction
General format:
A B AB
EX:
4 Al + 3 O2 2 Al2O3
2 Na + Cl NaCl

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6. Decomposition Reactions
ONE reactant breaks down into two or more products
Opposite of synthesis
General Format:
AB A B
EX:
2 KClO KCl O2
2 MgO Mg + O2

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8. Single Displacement Reactions
One ELEMENT (metal) replaces another element (metal) in a compound
General Format:
A + BC AC + B
EX:
Ca + 2 AgNO Ag + Ca(NO3)2
Fe + CuCl2 FeCl2 + Cu

9. Single Displacement Reactions
One ELEMENT (halogen) replaces another element (halogen) in a compound
General Format:
X2 + BY BX + Y2
EX:
Cl2 + 2 NaBr Br2 + 2 NaCl
Br2 + CaI2 CaBr2 + I2

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11. Double Displacement Reactions
TWO compounds produce two NEW COMPOUNDS
The positive ions replace each other
General Format:
AB + CD AD + CB
EX:
NaCl KBr NaBr KCl
2 KOH + Pb(NO3) KNO3 + Pb(OH)2
H3PO4 + 3 KOH K3PO4 + 3 H2O

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13. Combustion Reactions A HYDROCARBON (contains hydrogen and
carbon and sometimes oxygen) combines
with OXYGEN to form CARBON DIOXIDE
and WATER
General Format:
CXHY O CO2 + H2O
EX:
CH O CO2 + 2 H2O

14. Your Turn!! synthesis single displacement single displacement
2 Ca + O2  2 CaO
Br2 + 2 LiI 2 LiBr + I2
2 Al + 3 Fe(NO3)2  2 Al(NO3)3 + 3 Fe
MgO + HCl  MgCl2 + H2O
2 C4H O2  8 CO H2O
single displacement
single displacement
double displacement
combustion

15. Your Turn!! decomposition double displacement double displacement
2 H2O2  2 H2O + O2
2 (NH4)3(PO4) + 3 Sr(OH)2  Sr3(PO4)2 + 6 (NH4)(OH)
H2(SO4) + 2 Na(OH)  Na2(SO4) + 2 H2O
Zn + 2 Ag(NO3)  Zn(NO3)2 + 2 Ag
Cu(NO3) + KCl  K(NO3) + CuCl
decomposition
double displacement
double displacement
single displacement
double displacement