1. Ch. 16 - Chemical Reactions
III. Types of Reactions

2. A + B  AB 2P + 3Br2  2PBr3 A. Synthesis
the combination of 2 or more substances to form a compound
only one product forms
A + B  AB
2P + 3Br2  2PBr3

3. AB  A + B 2H2O2  2H2O + O2 B. Decomposition
a compound breaks down into 2 or more simpler substances
only one reactant
AB  A + B
2H2O2  2H2O + O2

4. A + BC  AC + B Zn + 2HCl  ZnCl2 + H2 C. Single Replacement
one element replaces another in a compound
metal replaces metal (+)
nonmetal replaces nonmetal (-)
A + BC  AC + B
Zn + 2HCl  ZnCl2 + H2

5. AB + CD  AD + CB D. Double Replacement 2KOH + CuSO4  K2SO4 + Cu(OH)2
ions in two compounds “change partners”
cation(+) of one compound combines with anion(-) of the other
AB + CD  AD + CB
2KOH + CuSO4  K2SO4 + Cu(OH)2

6. CxHy+O2  CO2+H2O CH4 + 2O2  CO2 + 2H2O E. Combustion
the burning of a substance in O2 to produce heat
hydrocarbons (CxHy) always form CO2 and H2O
CxHy+O2  CO2+H2O
CH4 + 2O2  CO2 + 2H2O