1. TYPES OF CHEMICAL REACTIONS

2. Watch the video and answer questions on your worksheet 

3. Watch the movie and then complete the chart.
Type of Reaction
Definition
 Equation
Synthesis
Decomposition
Single Replacement
Double Replacement
Two or more elements or compounds combine to make a more complex substance
A + B → AB
AB → A + B
Compounds break down
into simpler substances
Occurs when one element replaces another one in a compound
AB + C → AC + B
Occurs when different atoms in two different compounds trade places
AB + CD → AC + BD
A = Red B = Blue C = Green D = Yellow

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

5. Soap Opera Version “Going Out” +

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

7. Soap Opera Version The “Break-Up” +

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

9. Soap Opera Version “The Home Wrecker” + +

10. 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 K(OH) + Pb(NO3) K(NO3) + Pb(OH)2
H3(PO4) + 3 K(OH) K3(PO4) + 3 H2O

11. Soap Opera Version “Wife Swap ” + +

12. 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

13. Identifying Chemical Reactions
2. Use colored pencils to circle the common atoms or compounds in each equation to help you determine the type of reaction it illustrates. Use the code below to classify each reaction.
S = Synthesis D = Decomposition SR = Single Replacement DR = Double Replacement
____ P O2 → P4O10 ____ Mg O2 → MgO
____ HgO → Hg O2 ____ Al2O3 → Al O2
____ Cl NaBr → NaCl Br2 ____ H N2 → NH3

14. ____ Na + Br2 → NaBr ____ CuCl2 + H2S → CuS + HCl
____ HgO Cl2 → HgCl O2 ____ C H2 → CH4
____ KClO3  →   KCl  +  O2  ____ S F2 → SF6
____ BaCl2   +   Na2 SO4 →     NaCl   +   BaSO4

15. 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

16. 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