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Chemistry Week 22 Please get out your homework!. February 13, 2013 AGENDA: 1 – Bell Ringer &...
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Transcript of Chemistry Week 22 Please get out your homework!. February 13, 2013 AGENDA: 1 – Bell Ringer &...
Chemistry Week
22
Please get out your
homework!
February 13, 2013
AGENDA:1 – Bell Ringer &
Agenda2 – Check Homework2 – Cornell Notes: Types
of Reactions3 – “We Do” Practice4 – “You Do” Practice
Today’s Goal:Students will be able to
describe types of reactions.
Homework1. Complete Classwork –
due tomorrow2. Complete Homework –
due by Friday3. Week 21 Work is due
by this Friday at the latest!!
4. If you missed Monday’s Quiz, please discuss with me a time to make it up.
Wednesday, February 13
Objective: Students will be able to describe types
of reactions.
Bell Ringer: Balance the following chemical
reaction: ___ Zn + ___AgNO3 ____Ag +
___Zn(NO3)2
Zn = Zn =Ag = Ag =NO3 = NO3 =
2 MINUTES REMAINING…
Wednesday, February 13
Objective: Students will be able to describe types
of reactions.
Bell Ringer: Balance the following chemical
reaction: ___ Zn + ___AgNO3 ____Ag +
___Zn(NO3)2
Zn = Zn =Ag = Ag =NO3 = NO3 =
1 MINUTES REMAINING…
Wednesday, February 13
Objective: Students will be able to describe types
of reactions.
Bell Ringer: Balance the following chemical
reaction: ___ Zn + ___AgNO3 ____Ag +
___Zn(NO3)2
Zn = Zn =Ag = Ag =NO3 = NO3 =
30 seconds Remaining…
Wednesday, February 13
Objective: Students will be able to describe types
of reactions.
Bell Ringer: Balance the following chemical
reaction: ___ Zn + ___AgNO3 ____Ag +
___Zn(NO3)2
Zn = Zn =Ag = Ag =NO3 = NO3 =
10 seconds Remaining…
BELL-RINGER TIME IS
UP!
February 13, 2013
AGENDA:1 – Bell Ringer &
Agenda2 – Check Homework2 – Cornell Notes: Types
of Reactions3 – “We Do” Practice4 – “You Do” Practice
Today’s Goal:Students will be able to
describe types of reactions.
Homework1. Complete Classwork –
due tomorrow2. Complete Homework –
due by Friday3. Week 21 Work is due
by this Friday at the latest!!
4. If you missed Monday’s Quiz, please discuss with me a time to make it up.
Wednesday, February 13
Objective: Students will be able to describe types
of reactions.
Bell Ringer: Balance the following chemical
reaction: ___ Zn + ___AgNO3 ____Ag +
___Zn(NO3)2
Zn = 1 Zn = 1Ag = 1 Ag = 1NO3 = 1 NO3 = 2
x 1 = 1
x 2 = 2
x 2 = 2
x 1 = 1
x 2 = 2
x 1 = 1
2 21 1
Cornell Notes
Objective: SWBAT Describe the types of chemical reactions
Date: 2/13/2013 Law of Conservation of Mass:
Matter/mass can neither be created nor destroyed, only changed.
Chemical Reaction: Reactants Products
Cornell Notes (continued)
Synthesis (S) (Combination): In synthesis reactions a new compound is made from simpler substances. A + B AB Example: H2 + O2 H2O
Decomposition (D): In decomposition reactions a compound is broken down into smaller substances. AB A + B Example: MgO Mg + O2
Cornell Notes (continued)
Single Replacement (SR): In single-replacement reactions one atom replaces another ion in a compound that is in solution. AB + C A + CB Example: CuCl2 + Al Cu + AlCl3
Double Replacement (DR): In double-replacement reactions ions from each compound replace each other forming two new compounds as products. AB + CD AD + CB Example: NaOH + CaCl2 Ca(OH)2 +
NaCl
How to recognize which type?
Look at the reactants: (E = element and C = Compound)E + E or = SynthesisC + C
C =Decomposition
E + C =Single replacement
C + C = Double replacement
Cornell Notes (continued)
Combustion (C): In combustion reactions organic compounds (carbon and hydrogen) burn with oxygen to produce carbon dioxide, water, and energy. CxHy + O2 CO2 + H2O C2H3OH + O2 CO2 + H2O If the combustion is complete, the
products will be CO2 and H2O. If the combustion is incomplete, the
products will be CO (or possibly just C) and H2O.
Combustion Reaction Examples:
C4H10 + O2 ® CO2 + H2O
(complete)
C4H10 + O2 ® CO + H2O
(incomplete)
C6H12O6 + O2 ® CO2 + H2O
(complete)
C8H8 + O2 ® CO + H2O
(incomplete)
Type of Reaction Definition Equation
Combination
Decomposition
Single Replacement
Double Replacement
Combustion
When oxygen reacts with a element or compound to produce
H2O and CO2 (complete) or CO (incomplete)
CxHy + O2 → CO2 + H2O
A = Red B = Blue C = Green D = Yellow
A + B → AB
AB → A + B
AB + C → AC + B
AB + CD → AD + CB
Two or more elements or compounds combine to make
a more complex substance
Compounds break down into simpler substances
Occurs when one element replaces another one in a
compound
Occurs when different atoms in two different
compounds trade places
1) ____ P + O2 → P4O10
2) ____ Mg + O2 → MgO
3) ____ HgO → Hg + O2 4) ____ Al2O3 → Al + O2
5) ____ Cl2 + NaBr → NaCl + Br2
6) ____ H2 + N2 → NH3
SUMMARY: Identify the reactions below as COMBINATION, DECOMPOSITION, SINGLE REPLACEMENT, or DOUBLE REPLACEMENT. Use the symbols below
INSTEAD of writing the entire word.
S= Synthesis D = Decomposition SR = Single Replacement DR = Double Replacement