types of chemical reaction

1. the following
situations:
OBSERVE
and DESCRIBE

2. Situation1:

3. BREAK NA
TAYO!
Situation2:

4. Situation3:
Mang-aagaw kawawa

5. Situation4:
I found sum1
better
So do I.

6. TYPES OF CHEMICAL REACTION
1. COMBINATION Reaction
2. DECOMPOSITION Reaction
3. SINGLE REPLACEMENT Reaction
4. DOUBLE REPALCEMENT Reaction
5. COMBUSTION Reaction

7. Situation1:
BREAK NA TAYO!
Situation2:
Situation3:
Situation4:

8. 1. Combination Reaction
or Synthesis Reactions
- two or more substances combine to form a single
product.
A + B AB
Elements or compounds
Always a compound

9. EXAMPLES:
2Na(s) + Cl2(g) 2NaCl
4Al(s) + 3 O2(g) 2Al2O3(s)
S(s) + 3O2(g) SO2(g)

11. 2. Decomposition Reactions
or Analysis Reactions
AB A + B
Elements or compoundsAlways a compound
- a single compound is broken down into two or more simple
substances.
- a decomposition reaction is the reverse of combination reaction.

12. EXAMPLES:
KClO3(s) KCl(s) + O2(g)
Al2(CO3)3(s) Al2O3(s) + CO3(g)
LiHCO3(s) Li2CO3(s) + CO2(g)
+ H2O(g)

14. 3. SINGLE REPLACEMENT or
Substitution Reactions
- an element replaces another element in a compound.
Compound
Always a compound
A + BC AC + B
element
element

15. EXAMPLES:
CuSO4(aq) + Zn(s) ZnSO4(aq) + Cu(s)
NaBr(aq) + Cl2(g) NaCl(aq) + Br2(g)

17. 4. DOUBLE REPLACEMENT or
Metathesis Reactions
- two compounds exchange cations to produce two
different compounds.
Always a Compound
Always a compound
AB +CD AD + CB
Always a compound
Always a compound

18. EXAMPLES:
AgNo3(aq) + NaCl(aq) NaNO3(aq)
+ AgCl(s)
HBr(aq) + MgS(s) H2S(g) + MgBr2(aq)
HNO3(aq) + KOH(s) KNO3(g) + H20(l)

20. 5. COMBUSTION Reactions
- happens when an element or a compound reacts with
oxygen, often producing energy in the form of heat and
light.
- Combustion reactions are exothermic
Mg(s) +O2(g) 2MgO(s)
C3H8(g) +5O2(g) 3CO2(g) + 4H2O(g) + 2040 kJ

22. BaCO3(s) BaO(s) + CO2(g)
H2SO4(aq) + NaOH(aq)
Na2SO4(aq) + H2O(l)
Identify the type of reaction involved.

23. AgNO3(aq)+Al(s)
Al(NO3)3(aq)+Ag(s)
Zn(s) + N2(g) Zn3N2(s)
Identify the type of reaction involved.

24. Mg(HCO3)2(s) MgCO3(s)+CO2(g)
+H2O(g)
Identify the type of reaction involved.