SCHEME OF WORK
Chemistry
Form 3 2021
TERM III
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WK LSN TOPIC SUB-TOPIC OBJECTIVES L/ACTIVITIES L/T AIDS REFERENCE REMARKS
1 1
NITROGEN & ITS COMPOUNDS.
Isolation of nitrogen from air.
By the end of the lesson, the learner should be able to:



Describe isolation of nitrogen from air.



Teacher demonstration, explanations and equations.
Aspirator, copper turnings, gas jar, combustion tube, trogh.
K.L.B. BK III
PP. 134-135

Longhorn Book
P 186
1 2
NITROGEN & ITS COMPOUNDS.
Industrial production of nitrogen.
Lab. preparation of nitrogen.
By the end of the lesson, the learner should be able to:
Describe industrial production of nitrogen.
Describe lab preparation of nitrogen.
Discussion and description.
Drawing schematic diagram for the process.
Teacher demonstration:
Students? record observations made from tests on the gas.
Writing equations of reactions.
Ammonium chloride, sodium nitrate
K.L.B. BK III
PP.135-136

Longhorn Book
PP 188-9
1 3
NITROGEN & ITS COMPOUNDS.
Physical and chemical properties of nitrogen. Uses of nitrogen.
By the end of the lesson, the learner should be able to:
State physical and chemical properties of nitrogen.


List down uses of nitrogen.

Discussion and writing equations.
K.L.B. BK III
P. 138

Longhorn
Book III
PP 191-2
1 4
NITROGEN & ITS COMPOUNDS.
Nitrogen (I) oxide. Lab preparation.
Properties and uses of Nitrogen (I) oxide.
By the end of the lesson, the learner should be able to:
To describe Nitrogen (I) oxide.
To list down physical properties of nitrogen (I) oxide.
To describe chemical properties of nitrogen (I) oxide.
To list down uses of nitrogen (I) oxide.
Teacher demonstration: -
Carry out tests on the gas.
Students record observations in a table.
Guided discussion.
Q/A: Deductions from tests carried out.
Discussion of chemical properties and writing of equations.
Teacher elucidates uses of nitrogen (1) oxide.
Ammonium nitrate.
K.L.B. BK III
PP. 139-141

Longhorn
Book III
PP 195-6
1 5
NITROGEN & ITS COMPOUNDS.
Nitrogen (II) oxide. Lab preparation.
Properties of the gas.
By the end of the lesson, the learner should be able to:
To describe lab preparation of nitrogen (II) oxide.
To list down physical properties of nitrogen (II) oxide
To describe chemical properties of nitrogen (11) oxide
Class experiment: Preparation and carrying out tests on the gas.
Observations recorded in a table.
Q/A: Deductions from tests carried out.
Discussion of chemical properties and writing of equations.
Carry out a confirmatory test for the presence of the gas.
Dil nitric acid, copper turnings.
K.L.B. BK III
P. 142
Longhorn
Book III
PP 200-1
2 1
NITROGEN & ITS COMPOUNDS.
Nitrogen (1V) oxide Lab preparation.
Properties of Nitrogen (IV) oxide.
By the end of the lesson, the learner should be able to:
To describe nitrogen (IV) oxide lab preparation.
To list down physical properties of nitrogen (IV) oxide
To describe chemical properties of nitrogen (IV) oxide
To state uses of nitrogen (1V) oxide.
Teacher demonstration: - Preparation of the gas and corresponding equation.
Tests on the gas and make observations.
Deduce physical properties from the table of observations.
To describe chemical properties from the table of observations.
Discuss uses of nitrogen (1V) oxide.
Conc. nitric acid, copper turnings.
K.L.B. BK III
PP. 144-145
2 2
NITROGEN & ITS COMPOUNDS.
Ammonia. Lab preparation of ammonia.
Properties of ammonia.
By the end of the lesson, the learner should be able to:
To describe lab preparation of ammonia
To list down physical properties of ammonia.
Q/A: Structure of ammonia.
Group experiments: Preparation of ammonia.
Tests on the gas.
Deduce physical properties from the observations above.
Discuss chemical properties from the observations above.
Write down chemical equations.
Ca(OH)2, NH4Cl Solutions, CaO, litmus papers..M THREE CHEMISTRY TERM TWO 20....
K.L.B. BK III
PP. 147-148
2 3
NITROGEN & ITS COMPOUNDS.
Solubility of ammonia.
Reaction of ammonia with metal ions.
By the end of the lesson, the learner should be able to:
To describe an experiment to determine solubility of ammonia.
To prepare aqueous solution of ammonia.
To carry out tests of aqueous ammonia on metal ions.
Teacher demonstration.
Discussion.
Teacher demonstration: - Preparation of aqueous solution of ammonia.
Class experiments: -
Students record observations when drops of aqueous ammonia are added, then in excess.
2 cm? Solutions containing various metal ions.
K.L.B. BK III
P. 150
2 4
NITROGEN & ITS COMPOUNDS.
Ionic equations of above reactions.
Burning ammonia in the air.
By the end of the lesson, the learner should be able to:
To write iIonic equations of above reactions.
To describe burning ammonia in the air.
Discuss precipitation of metal hydroxides by aqueous ammonia.
Confirmatory tests for various concentrations.
Teacher demonstration
Discussion
Chemical equations of reactions.
Conc. Ammonium solution
Hot platinum rod
Oxygen.
K.L.B. BK III
P.154

Longhorn BK III
P 223
2 5
NITROGEN & ITS COMPOUNDS.
Reaction of ammonia with copper (II) Oxide.
Haber process.
By the end of the lesson, the learner should be able to:
To name products formed when ammonia reacts with hot CuCl2 solid.
To explain reducing properties of ammonia.
Identify raw materials for Haber process and how they are obtained in large scale.
Discuss the Haber process.
Represent Haber process in a schematic diagram.
Teacher demonstration and discussion.
Write down equations for the reactions.
Discussion and explanations.
Granular CuCl2
Combustion tube,
Dry ammonia
U-tube
Gas jar.
Chart- schematic diagram.

K.L.B.
BK III
P. 158
3 1
NITROGEN & ITS COMPOUNDS.
Uses of ammonia.
Nitric acid. Lab preparation.
By the end of the lesson, the learner should be able to:
To list down uses of ammonia.
To list down nitrogenous fertilizers.
To describe lab preparation of nitric acid.
Teacher elucidates uses of ammonia and nitrogenous fertilizers.
Teacher demonstration.
Write equations of reaction.
Discussion.
Retort stand
Conc. H2SO4
KNO3
K.L.B. BK III
P. 161

Longhorn
Book III
PP 126 -226
3 2
NITROGEN & ITS COMPOUNDS.
Nitric acid Industrial manufacture.
By the end of the lesson, the learner should be able to:
To describe industrial manufacture of nitric acid.
Discussion and writing equations.
Chart
Schematic diagram.
K.L.B. BK III
P. 164
3 3
NITROGEN & ITS COMPOUNDS.
Reaction of dilute Nitric acid with metals.
Nitric acid and carbonates.
By the end of the lesson, the learner should be able to:
To describe reaction of dilute nitric acid with metals.
To write equations of reactions of dilute nitric acid with metals.
To describe action of nitric acid on carbonates and hydrogen carbonates.
Class experiment:- making observations and recording them in a table.
Discuss the observations.
Write down equations for the reactions.
Group experiments: - Action of Nitric acid on hydrogen carbonates.
Magnesium
Zinc
Copper
Solutions of
Na2CO3
NaHCO3
ZnCO3
CuCO3
K.L.B. BK III
PP. 165-166

Longhorn
Book III
PP 166-8
3 4
NITROGEN & ITS COMPOUNDS.
Reaction of dil. nitric acid with hydrogen carbonates.
Dilute nitric acid and metal hydroxides and oxides.
By the end of the lesson, the learner should be able to:
Write equations for reaction of dil. nitric acid with hydrogen carbonates.
Predict results of reacting dilute nitric acid with metal hydroxides and oxides.
Discussion and corresponding equations.
Group experiments & writing equations for the reactions.
Metal hydroxides.
K.L.B. BK III
P. 167
3 5
NITROGEN & ITS COMPOUNDS.
Reaction of nitric acid as an oxidizing agent.
Uses of nitric acid & nitrates.
By the end of the lesson, the learner should be able to:
Describe reactions of nitric acid as an oxidizing agent.
To state uses of nitrates.
To describe preparation of nitrates.
Class experiments: -
Explain observations made.
Discussion
Equations for the reactions for preparation of nitrates.
Nitric acid acidified iron sulphate, sulphur, and copper metal.
K.L.B. BK III
PP. 169-170

Longhorn Book III
PP 239 -240
4 1
NITROGEN & ITS COMPOUNDS.
Action of heat on nitrates.
By the end of the lesson, the learner should be able to:
To write equations of decomposition of nitrates on heating.
Discuss above observations.
Write relevant equations.
K.L.B. BK III
P 172
4 2
NITROGEN & ITS COMPOUNDS.
Test for nitrates.
Nitrogen compounds and the environment.
By the end of the lesson, the learner should be able to:
To carry out tests on nitrates.
To explain the pollution of nitrogen compounds in the environment.
To state ways of reducing environmental pollution by nitrogen compounds.
Class experiments.
Make observations and deductions.
Discuss the brown ring test for nitrates.
Brief guided discussion.
K.L.B. BK III
PP 173-174

Longhorn
Book III
PP 243
4 3
SULPHUR AND ITS COMPOUNDS
Acidic properties of SO2.
By the end of the lesson, the learner should be able to:
To carry out experiments to determine acidic properties of SO2.
Teacher demonstration to verify acidic properties of sulphur dioxide.
Write equations.
K.L.B.BK III
P. 193
Longhorn
Book III
PP 262-3
4 4
SULPHUR AND ITS COMPOUNDS
Reducing action of SO2.
Bleaching properties of SO2.
By the end of the lesson, the learner should be able to:
To verify reducing action of SO2.
To carry out experiments to determine bleaching properties of SO2.
Class experiments: make observations and draw conclusions.
Write balanced corresponding equations.
Discuss the observations made above.
Write corresponding equations.
Experimental worksheets.
K.L.B.BK III
P. 195
4 5
SULPHUR AND ITS COMPOUNDS
Oxidizing action of SO2.
Sulphate and sulphite ions. Uses of SO2.
By the end of the lesson, the learner should be able to:
To explain Oxidizing action of SO2.
To carry out tests for Sulphate and sulphite ions.
State uses of SO2.
Q/A: review redox reactions.
Teacher demonstration: - Lowering magnesium into a jar of SO2; effect of SO2 on hydrogen sulphide.
Discuss observations.
Write equations for the reactions.
Class experiments.
Make deductions from the observations made.
Write (ionic) equations for the reactions.
Teacher elucidates uses of SO2.
Burning magnesium.
Hydrogen sulphide.
Sodium sulphate
Barium chloride
Barium nitrate.
K.L.B.
BK III
PP. 198-199
Longhorn
Book III
PP 266-7
5

Midterm

6 1
SULPHUR AND ITS COMPOUNDS
Sulphuric acid. Contact process of manufacture.
By the end of the lesson, the learner should be able to:
To identify raw materials for manufacture of sulphuric acid.
To describe the contact process.
Discussion using schematic
flow charts.
Writing equations.
Chart-schematic
Flow charts.

K.L.B. BK III
PP.201-203
Longhorn
Book III
PP 275-6
6 2
SULPHUR AND ITS COMPOUNDS
Properties of conc. H2SO4.
Physical properties of sulphuric acid.
By the end of the lesson, the learner should be able to:
Describe properties of conc. H2SO4.
To dilute conc. sulphuric acid.
State physical properties of sulphuric acid.
Discuss above observations.
Write relevant equations.
Teacher demonstration ? diluting conc. sulphuric acid.
Discuss use of conc. sulphuric acid as a drying and dehydrating agent.
Conc. sulphuric acid.
K.L.B.
BK III
P. 204
6 3
SULPHUR AND ITS COMPOUNDS
Chemical properties of Sulphuric acid.
Dilute H2SO4, carbonates and hydrogen carbonates.
By the end of the lesson, the learner should be able to:
To write equations to show that conc. sulphuric acid is a drying and dehydrating agent.
To describe reactions of dilute H2SO4 with metals.
To describe reaction of dilute H2SO4 with carbonates and hydrogen carbonates.
Discussion and explanations.
Group expts. ? reaction of metals with dilute H2SO4, make observations and relevant deductions; writing corresponding equations.
Discussion, writing relevant equations.
Magnesium, zinc, copper metals.
K.L.B.
BK III P. 206
Longhorn
Book III
PP 276-8
6 4
SULPHUR AND ITS COMPOUNDS
Dilute H2SO4, and metal oxides and hydroxides.
By the end of the lesson, the learner should be able to:
To investigate reaction of dilute H2SO4 with metal oxides and hydroxides.
Class expts.
Observing colour changes.
Oxides of magnesium, zinc, copper.
NaOH Solution.
K.L.B.
BK III P. 210
Longhorn
Book III
PP 287-8
6 5
SULPHUR AND ITS COMPOUNDS
Dilute H2SO4 and metal oxides & hydroxides.
By the end of the lesson, the learner should be able to:
To explain reactions of dilute H2SO4 with metal oxides and hydroxides.
Discussion, writing relevant chemical equations.

K.L.B.
BK III P. 211
7 1
SULPHUR AND ITS COMPOUNDS
Hydrogen sulphide. Preparation of the gas. Reaction of the gas with oxygen.
By the end of the lesson, the learner should be able to:
To describe preparation of hydrogen sulphide.
To state properties of the gas.
Theoretical / descriptive approach.
Writing corresponding equations.
Discuss physical properties of the gas and reaction of the gas with oxygen.
K.L.B.
BK III P. 210
Longhorn
Book III
PP 289-90
7 2
SULPHUR AND ITS COMPOUNDS
Reaction of the gas with water. Reducing properties of the gas.
Sulphur and its effects on the environment.
By the end of the lesson, the learner should be able to:
To write equations for reaction of the gas with water.
To demonstrate reducing properties of the gas.
To explain environmental pollution caused by sulphur and its compounds.
Writing chemical equations for the reactions.
Discussion and explanation.
K.L.B.
BK III P. 212.
Longhorn
Book III
PP 291-2
7 3
CHLORINE & ITS COMPOUNDS
Lab. preparation of chlorine gas.
Physical properties of chlorine.
By the end of the lesson, the learner should be able to:
Describe laboratory preparation of chlorine gas.
State physical properties of chlorine.
Teacher demonstration ? gas prep. tests on the gas.
Q/A: Relate the properties to the method of collection of the gas.
Write equations for the reaction leading to formation of chlorine.
Conc. HCl, Manganese (IV) oxide.

K.L.B.BK III
P. 219
Longhorn
Book III
PP 298-9
7 4
CHLORINE & ITS COMPOUNDS
Chemical properties of chlorine ? reaction with water.
Chemical properties of chlorine - Reaction with metals - Reaction with non-metals.
By the end of the lesson, the learner should be able to:
To investigate and explain reaction of chlorine with water.
To investigate and explain reaction of chlorine with metals / non-metals.
Teacher demonstration:
Writing chemical equations.
Discussion.
Moist blue litmus papers.
K.L.B.BK III
P. 222
Longhorn
Book III
PP 301-2
7 5
CHLORINE & ITS COMPOUNDS
- Oxidizing properties of chlorine.
By the end of the lesson, the learner should be able to:
To investigate and explain reaction of chlorine with reducing a gents.
Group experiments.
Discuss and explain observations made.
Write corresponding chemical equations.
Expt. Worksheets.
K.L.B. BK III
PP. 226 -227
Longhorn Book
PP 307-8
8 1
CHLORINE & ITS COMPOUNDS
Chlorine and alkalis.
By the end of the lesson, the learner should be able to:
To investigate and explain reaction of chlorine with alkalis.
Teacher demonstration: Bubbling chlorine with dilute cold / hot NaOH solution.
Make observations and account for them.
Cold / hot NaOH solutions.
K.L.B.BK III
P. 228
Longhorn Book III
PP 313-4
8 2
CHLORINE & ITS COMPOUNDS
Test for chlorides.
Uses of chlorine gas.
By the end of the lesson, the learner should be able to:
To carry out tests for chlorides.
To state uses of chlorine.
Class expts.
Discuss observations, results.
Write chemical equations for the reactions.
Teacher elucidates uses of chlorine.
Expt. Worksheets.
Zinc chloride, litmus paper, conc. Sulphuric acid.
K.L.B.BK III
P. 230
Longhorn Book III
PP 318-319
8 3
CHLORINE & ITS COMPOUNDS
Hydrogen chloride gas. Lab. prep. Physical properties.
By the end of the lesson, the learner should be able to:
To describe Lab. prep of hydrogen chloride gas.
To investigate and state physical properties of hydrogen chloride gas.
Teacher demonstration.
Carry out tests on the gas and deduce the properties of the gas.
Sodium chloride crystals, conc H2SO4

K.L.B.BK III
P. 232
Longhorn
Book III
PP 323-4
8 4
CHLORINE & ITS COMPOUNDS
Aqueous hydrogen chloride.
By the end of the lesson, the learner should be able to:
To prepare aqueous hydrogen chloride.
Class experiment leading to deduction of chemical properties of hydrogen chloride gas.
Distilled water.

K.L.B.BK III
P. 234
8 5
CHLORINE & ITS COMPOUNDS
Further chemical properties of hydrogen chloride gas.
Large-scale production of hydrochloric acid.
Uses of hydrochloric acid.
Effects of hydrochloric acid on the environment.
By the end of the lesson, the learner should be able to:
To determine chemical properties of hydrogen chloride gas.
To carry out confirmatory test for hydrogen chloride gas.
Identify raw materials for manufacture of hydrochloric acid in large scale.
Describe the manufacturing process.
To state uses of hydrochloric acid.
To explain effects of hydrochloric acid on the environment.
Class experiment leading to deduction of further chemical properties of hydrogen chloride gas / confirmatory test for hydrogen chloride gas.
Discussion and giving relevant equations.
Brief discussion.
Discussion and explanation.
Assignment.
Ammonia solution.
K.L.B. BK III
PP.
235 -223
Longhorn
Book III
PP 327-331
9

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