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