thursday 2/9/12

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Thursday 2/9/12 Bell Ringer 1) Get out your notes from yeterday. 2) Write the balanced equation: 3) Ifluorine reacts with sodium bromide to yield…… Schedule 1.Bell Ringer 2.Types of Chemical Rxns Notes HOMEWORK: Practice Problems PAP Chemistry Teachers open the door, but you must enter by yourself. I CAN……solve chemistry problems by being an independent, creative thinker.

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Thursday 2/9/12. Bell Ringer. Schedule. PAP Chemistry. 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. . - PowerPoint PPT Presentation

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Page 1: Thursday 2/9/12

Thursday2/9/12

Bell Ringer

1) Get out your notes from yeterday.

2) Write the balanced equation:

3) Ifluorine reacts with sodium

bromide to yield……

Schedule1. Bell Ringer

2. Types of Chemical Rxns Notes

HOMEWORK: Practice Problems

PAP Chemistry

Teachers open the door, but you must enter by yourself.

I CAN……solve chemistry problems by being an independent, creative

thinker.

Page 2: Thursday 2/9/12

I II III IV V

Chemical Reactions

Types of Chemical Reactions

Page 3: Thursday 2/9/12

A. Combination or Synthesis the combination of 2 or more

substances to form a compound

only one product

A + B AB

Page 4: Thursday 2/9/12

A. Synthesis

H2(g) + Cl2(g) 2 HCl(g)

Page 5: Thursday 2/9/12

Al(s)+ Cl2(g) AlCl3(s)2 3 2

A. Combination or Synthesis

Products: ionic - cancel charges covalent - hard to tell

Page 6: Thursday 2/9/12

B. Combustion

CH4(g) + 2O2(g) CO2(g) + 2H2O(g)

the burning of any substance in O2 to produce heat

A + O2 B

EX: Burning of natural gas, wood and gasoline

Page 7: Thursday 2/9/12

Na(s)+ O2(g)

C3H8(g)+ O2(g) 5 3 4

B. Combustion

Products: contain oxygen hydrocarbons form CO2 + H2O

CO2(g)+ H2O(g)

Na2O(s) 4 2

***Combustion reactions are a type of synthesis reaction

Page 8: Thursday 2/9/12

C. Decomposition

a compound breaks down into 2 or more simpler substances

only one reactant

AB A + B

Page 9: Thursday 2/9/12

C. Decomposition

2 H2O(l) 2 H2(g) + O2(g)

Page 10: Thursday 2/9/12

KBr(l) K(s) + Br2(l) 2 2

C. Decomposition

Products: binary - break into elements others - hard to tell

2NaHCO3(s) Na2CO3(aq) + CO2(g) + H2O(l)

Page 11: Thursday 2/9/12

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

Page 12: Thursday 2/9/12

D. Single Displacement or Replacement

Cu(s) + 2AgNO3(aq) Cu(NO3)2(aq) + 2Ag(s)

Page 13: Thursday 2/9/12

Fe(s)+ CuSO4(aq) Cu(s)+ FeSO4(aq)

D. Single Displacement or Replacement

Products: metal metal (+) nonmetal nonmetal (-) free element must be more active (check activity series)

Br2(l)+ NaCl(aq) N.R.

Page 14: Thursday 2/9/12

Activity Series of the Metals

Lithium Potassium Calcium Sodium Magnesium Aluminum Zinc Chromium Iron Nickel Tin Lead HydrogenHydrogen Bismuth Copper Mercury Silver Platinum Gold

Metals can replace other metalsprovided that they are above themetal that they are trying to replace.

Metals above hydrogen can replace hydrogen in acids.

Metals from sodium upward canreplace hydrogen in water

Page 15: Thursday 2/9/12

The Activity Series of the Halogens

Fluorine

Chlorine

Bromine Iodine

Halogens can replace other halogens in compounds, providedthat they are above the halogenthat they are trying to replace.

2NaCl(s) + F2(g) 2NaF(s) + Cl2(g)

MgCl2(s) + Br2(g) No Reaction

Page 16: Thursday 2/9/12

AB + CD AD + CB

E. Double Displacement or Replacement ions in two compounds “change partners” cation of one compound combines with

anion of the other

Page 17: Thursday 2/9/12

E. Double Displacement or Replacement

Pb(NO3)2(aq) + K2CrO4(aq) PbCrO4(s) + 2KNO3(aq)

Page 18: Thursday 2/9/12

Pb(NO3)2(aq)+ KI(aq) PbI2(s)+ KNO3(aq)

E. Double Displacement or Replacement Products:

switch negative ions one product must be insoluble (check

solubility table)

NaNO3(aq)+ KI(aq) N.R.

2 2