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Section 3: Five Types of ReactionsPowerPoint Presentation

Section 3: Five Types of Reactions

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1. Combination/Synthesis

2. Decomposition

3. Single Replacement

4. Combustion

5. Double Replacement

Section 3: Five Types of Reactions

1. Combination/Synthesis

2 H2 + O2 2 H2O

2. Decomposition

H2O2 H2 + O2

3. Single Replacement

Zn + 2HCl ZnCl2 + H2

3. Single Replacement

“Cuttin’ In”

1 element replaces another in a compound

A+BCAC+B

Zn + 2HCl

ZnCl2+ H2

4. Combustion

Burnin’

burning a hydrocarbon(CxHy) in O2

always forms CO2and H2O

CxHy+O2 CO2+H2O

CH4+2O2

CO2+2H2O

1–4 Redox

Synthesis

A0 + B0 → A+B–

SingleReplacement

C0 + A+B– → C+B– + A0

Zn + 2HCl ZnCl2 + H2

2H2 + O2 2H2O

Decomposition

A+B– → A0 + B0

Combustion

CxHy + O2 → CO2 + H2O

+4

+

-2

-2

+

–

0

H2O2 H2 + O2

CH4 + 2O2 CO2 + 2H2O

5. Double Replacement

“Switchin’ Partners”

ions in two compounds “change partners”

AB+CDAD +CB

NOT REDOX

NaCl + AgF

NaF + AgCl

Quick Quiz!

1. What type of reaction is described by the following equation?

6 Li + N2 2 Li3N

A. combination reaction

B. decomposition reaction

C. single-replacement reaction

D. combustion reaction

REDOX?

Quick Quiz.

2. What type of reaction is described by the following equation?

Mg + HNO3 Mg(NO3)2 + H2

A. combination reaction

B. decomposition reaction

C. single-replacement reaction

D. double-replacement reaction

REDOX?

Quick Quiz.

3. What type of reaction is described by the following equation?

2 C2H5OH + 7 O2 4 CO2 + 6 H2O

A. double-replacement reaction

B. decomposition reaction

C. single-replacement reaction

D. combustion reaction

REDOX?

Quick Quiz.

4. What type of reaction is described by the following equation?

Pb(NO3)2 + 2 NaCl PbCl2 + 2 NaNO3

A. combination reaction

B. decomposition reaction

C. double-replacement reaction

D. single-replacement reaction

REDOX?

Quick Quiz.

5. Balance the following equation and indicate whether it represents a combination or decomposition reaction.

H2SO4 H2O2 + SO2

A. H2SO4 H2O2 + SO2 combination reaction

B. H2SO4 H2O2 + SO2 decomposition reaction

C. H2SO4 2H2O2 + SO2 combination reaction

D. H2SO4 2H2O2 + SO2 decomposition reaction

REDOX?

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