1. 5 Types of Reactions

2. A + B = AB AB = A + B 5 Common Reaction Types:
-synthesis -decomposition -combustion -single displacement -double displacement
synthesis - means to make something or build
Example: synthetic material, photosynthesis
A + B = AB
decomposition- means to something down
starts out as 1 whole and breaks into 2 or more
EX: decomposing (dead) animals or garbage
AB = A + B

3. A(fuel) + O2 = H2O + CO2 C3H8 + 5O2 = 4H2O + 3CO2
5 Common Reaction Types:
-synthesis -decomposition -combustion -single displacement -double displacement
Combustion-burning
always has CO2 as a product
A(fuel) + O2 = H2O + CO2
actual example:
C3H8 + 5O2 = 4H2O + 3CO2

4. AB + C = AC + B 2NaCl + Ca = CaCl2 + 2Na
5 Common Reaction Types:
-synthesis -decomposition -combustion -single displacement -double displacement
single displacment- 1 “switch”
one element switches or hops to another partner
AB + C = AC + B
Cl switches to pair w/ Ca in the product
2NaCl + Ca = CaCl2 + 2Na
Like a divorce and a remarriage

5. AB + XY = AY + BX Na2SO4 + BeO= BeSO4 + Na2O
5 Common Reaction Types:
-synthesis -decomposition -combustion -single displacement -double displacement
double displacment- 2 “switch”
2 elements switch or change partners
AB + XY = AY + BX
Na & So4 both switches partners in the product
Na2SO4 + BeO= BeSO4 + Na2O

6. 5 Types of Chemical Reactions
Guess which common reaction type:
4Fe + 3O Fe2O3
2 substances
1 product
synthesis

7. 5 Types of Chemical Reactions
Examples of synthesis reactions:
Synthesis Reaction
A skinny bird (reactant) and the worm (reactant) combine to make one product…..one fat bird.

8. 5 Types of Chemical Reactions
Examples of synthesis reactions: 1 2
rain water & carbon dioxide in the air
carbon monoxide gas & oxygen gas
combine to form
combine to form
carbonic acid
carbon dioxide gas

9. 5 Types of Chemical Reactions
5 Common Reaction Types:
Guess which common reaction type?
reactant > product + product
decomposition

10. 5 Types of Chemical Reactions
Examples of decomposition reactions:
                                                                                                              
1) water can be broken down into hydrogen gas & oxygen gas
2)To visualize this reaction look at the cartoon:
the egg (the reactant), which contained the turtle at one time, now has opened and the turtle (product) and egg shell (product) are now two separate substances.

11. 5 Types of Chemical Reactions
Examples of decomposition reactions:
Decomposition Reaction
Ex: mercury oxide decomposes into mercury and oxygen
2HgO Hg + O2

12. 5 Types of Chemical Reactions
Guess which common reaction type?
Zn + 2HCL ZnCl2 + H2
Single Displacement

13. 5 Types of Chemical Reactions
Single Replacement Reaction Cont’d:
The chemical equation for this single replacement reaction looks like:
reactant + reactant -----> product + product
Zn + 2HCL ZnCl2 + H2

14. Single Replacement To visualize this reaction look at the cartoon:
the guy in the orange shirt steals the date of the other guy.
So, a part of one of the reactants trades places and is in a different place among the products

15. 5 Types of Chemical Reactions
Guess which common reaction type?
AgNo3 + NaCl AgCl + NaNo3
double displacement

16. 5 Types of Chemical Reactions
4) Double Displacement (Replacement) Reaction:
a reaction in which the elements in two compounds are exchanged
parts of two compounds switch places to form two new compounds
Two reactants yield two products.
they switch partners
AX + BY  AY + BX

17. 5 Types of Chemical Reactions
Double Displacement (Replacement) Reaction:
The chemical equation for double replacement reaction looks like:
reactant + reactant -----> product + product
EX: silver nitrate combines with sodium
two new compounds--silver chloride & sodium nitrate are formed
WHY?…
because the sodium and silver switched places

18. 5 Types of Chemical Reactions
5 Common Reaction Types:
Guess which common reaction type?
C7H6O + O2 ---> CO2 + H2O
combustion