1. Types of Chemical Reactions

2. Combination Reactions
Reactions where two or more substances combine to form a new substance
General Formula: A B  AB

3. Combination Reactions
Try these:
Mg + O2 
Be + O2 
SO2 + H2O 
K + Br2 
Al2O3 + H2O 

4. Combination Reactions
Answers:
2 Mg + O2  2 MgO
2 Be + O2  2 BeO
SO2 + H2O H2SO3
2 K + Br2  2 KBr
2 Al2O3 + 6 H2O  4 Al(OH)3

5. Decomposition Reactions
Reactions where a single compound breaks apart into two or more new compounds
General Formula: AB  A B

6. Decomposition Reactions
Try these:
CaCO3 
NaCl 
HgO 
Mg(ClO3) 2 
Fe(OH)3 

7. Decomposition Reactions
Answers:
CaCO3  CaO + CO2
2 NaCl  2 Na + Cl2
2 HgO  2 Hg + O2
Mg(ClO3) 2  MgCl2 + 3 O2
Fe(OH)3  Fe2O3 + H2O

8. Combustion Reactions
Reactions where a compound combines with oxygen to form one or more new compounds.
General Formula: A + O2  AO (H2O) + (B)

9. Combustion Reactions Try These C6H6 + O2  C6H12O6 + O2  Na + O2 
P + O2 
Cu + O2 

10. Combustion Reactions Answers: 2 C6H6 + 15 O2  12 CO2 + 6H2O
C6H12O6 + 6 O2  6 CO2 + 6 H2O
4 Na + O2  2 Na2O
4 P + 5 O2  2 P2O5
2 Cu + O2  2 CuO

11. Single Replacement Reactions
Reactions where one element replaces a second element in a compound
General Formula: A BC  AC B

12. Single Replacement Reactions
Try these:
K + AgNO3 
HCl + Zn 
CuBr2 + Na 
Mg + Zn(NO3)2 
Fe2O3 + H2 

13. Single Replacement Reactions
Answers:
K + AgNO3  KNO3 + Ag
Zn + 2 HCl  ZnCl2 + H2
CuBr2 + 2 Na   2 NaBr + Cu
Mg + Zn(NO3)2  Zn + Mg(NO3)2
Fe2O3 + 3 H2  2 Fe + 3 H2O

14. Double Replacement Reactions
Reactions where positive ions are exchanged between compounds
General Formula: AB CD  AD BC

15. Double Replacement Reactions
Try These:
Pb(NO3)2 + CuSO4 
AgMnO4 + ZnCl2 
NaOH + HCl 
H2SO4 + Al(OH) 3 
Ba(NO3) 2 + NaSO4 

16. Double Replacement Reactions
Answers:
Pb(NO3)2 + CuSO4  PbSO4 + Cu(NO3) 2
2 AgMnO4 + ZnCl2  2 AgCl + Zn(MnO4) 2
NaOH + HCl  NaCl  H2O
3 H2SO4 + 2 Al(OH) 3  Al2 (SO4) H2O
Ba(NO3) 2 + Na2SO4  2 NaNO3 + BaSO4

17. Single Replacement Reactions
Metal reactivity series applies
H from H2O
H from Acids

18. Single Replacement Reactions
Try these - metal reactivity series applies
Mg + 2 AgNO3 
2 Li + 2 H2O 
Ag + KNO3 
Mg + LiNO3 
3 Ca + 2 AlCl3 

19. Single Replacement Reactions
Answers - metal reactivity series applies
Mg + 2 AgNO3  Mg(NO3)2 + 2 Ag
2 Li + 2 H2O  2 LiOH + H2
Ag + KNO3  no reaction
Mg + LiNO3  no reaction
3 Ca + 2 AlCl3  3 CaCl2 + 2 Al

20. Double Replacement Reactions
Solubility Table Applies

21. Double Replacement Reactions
Answers - Solubility Table Applies
K2CO3 + Sr(NO3)2 
NH4Cl + Na3PO4 
HCl + ZnS 
NH4Cl + Pb(NO3)2 
Na3PO4+ Li2SO4 

22. Double Replacement Reactions
Answers - Solubility Table Applies
K2CO3 + Sr(NO3)2  SrCO3↓ + 2 KNO3
3 NH4Cl + Na3PO4  NaCl + (NH4)3PO4↓
2 HCl + ZnS  ZnCl2+ H2S ↑
2 NH4Cl + Pb(NO3)2  PbCl2 ↓ + NH4NO3
Na3PO4+ Li2SO4  no reaction