1. PAP Chemistry Bell Ringer Schedule Thursday 2/9/12 Bell Ringer
Get out your notes from yeterday.
Write the balanced equation:
Ifluorine reacts with sodium
bromide to yield……
Bell Ringer
Types of Chemical Rxns Notes
HOMEWORK: Practice Problems
I CAN……solve chemistry problems by being an independent, creative thinker.
Teachers open the door, but you must enter by yourself. 

2. Types of Chemical Reactions

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

4. A. Synthesis
H2(g) + Cl2(g)  2 HCl(g)

5. A. Combination or Synthesis
Products:
ionic - cancel charges
covalent - hard to tell
Al(s)+ Cl2(g) 
AlCl3(s)

6. CH4(g) + 2O2(g)  CO2(g) + 2H2O(g)
B. Combustion
the burning of any substance in O2 to produce heat
A + O2  B
CH4(g) + 2O2(g)  CO2(g) + 2H2O(g)
EX: Burning of natural gas, wood and gasoline

7. ***Combustion reactions are a type of synthesis reaction
B. Combustion
Products:
contain oxygen
hydrocarbons form CO2 + H2O
Na(s)+ O2(g) 
Na2O(s)
C3H8(g)+ O2(g) 
CO2(g)+ H2O(g)
***Combustion reactions are a type of synthesis reaction

8. AB  A + B C. Decomposition
a compound breaks down into 2 or more simpler substances
only one reactant
AB  A + B

9. C. Decomposition
2 H2O(l)  2 H2(g) + O2(g)

10. 2NaHCO3(s) Na2CO3(aq) + CO2(g) + H2O(l)
C. Decomposition
Products:
binary - break into elements
others - hard to tell
KBr(l) 
K(s) + Br2(l)
2NaHCO3(s) Na2CO3(aq) + CO2(g) H2O(l)

11. D. Single Displacement or Replacement
one element replaces another in a compound
metal replaces metal (+)
nonmetal replaces nonmetal (-)
Halogens are replaced by a more reactive halogen
A + BC  B + AC

12. D. Single Displacement or Replacement
Cu(s) + 2AgNO3(aq)  Cu(NO3)2(aq) + 2Ag(s)

13. D. Single Displacement or Replacement
Products:
metal  metal (+)
nonmetal  nonmetal (-)
free element must be more active (check activity series)
Fe(s)+ CuSO4(aq) 
Cu(s)+ FeSO4(aq)
Br2(l)+ NaCl(aq) 
N.R.

14. Activity Series of the Metals
Lithium
Potassium
Calcium
Sodium
Magnesium
Aluminum
Zinc
Chromium
Iron
Nickel
Tin
Lead
Hydrogen
Bismuth
Copper
Mercury
Silver
Platinum
Gold
Metals can replace other metals
provided that they are above the
metal that they are trying to
replace.
Metals above hydrogen can
replace hydrogen in acids.
Metals from sodium upward can
replace hydrogen in water

15. The Activity Series of the Halogens
Fluorine
Chlorine
Bromine
Iodine
Halogens can replace other
halogens in compounds, provided
that they are above the halogen
that they are trying to replace.
2NaCl(s) + F2(g) 
2NaF(s) + Cl2(g)
MgCl2(s) + Br2(g) 
No Reaction

16. E. Double Displacement or Replacement
ions in two compounds “change partners”
cation of one compound combines with anion of the other
AB + CD  AD + CB

17. E. Double Displacement or Replacement
Pb(NO3)2(aq) + K2CrO4(aq)  PbCrO4(s) + 2KNO3(aq)

18. E. Double Displacement or Replacement
Products:
switch negative ions
one product must be insoluble (check solubility table)
Pb(NO3)2(aq)+ KI(aq) 
PbI2(s)+ KNO3(aq)
NaNO3(aq)+ KI(aq) 
N.R.