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SCHEME OF WORK
Chemistry
Form 3 2025
TERM II
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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
2 1-2
NITROGEN & ITS COMPOUNDS.
Isolation of nitrogen from air.
Industrial production of nitrogen.
Lab. preparation of nitrogen.
By the end of the lesson, the learner should be able to:



Describe isolation of nitrogen from air.
Describe industrial production of nitrogen.



Teacher demonstration, explanations and equations.

Discussion and description.
Drawing schematic diagram for the process.
Aspirator, copper turnings, gas jar, combustion tube, trogh.
charts
Ammonium chloride, sodium nitrate
K.L.B. BK III
PP. 134-135

Longhorn Book
P 186

K.L.B. BK III
PP.135-136

Longhorn Book
PP 188-9
2 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.
charts
K.L.B. BK III
P. 138

Longhorn
Book III
PP 191-2
2 4
NITROGEN & ITS COMPOUNDS.
Nitrogen (I) oxide. Lab preparation.
By the end of the lesson, the learner should be able to:
To describe Nitrogen (I) oxide.
Teacher demonstration: -
Carry out tests on the gas.
Students record observations in a table.
Guided discussion.
Ammonium nitrate.
K.L.B. BK III
PP. 139-141

Longhorn
Book III
PP 195-6
2 5
NITROGEN & ITS COMPOUNDS.
Nitrogen (I) oxide. Lab preparation.
By the end of the lesson, the learner should be able to:
To describe Nitrogen (I) oxide.
Teacher demonstration: -
Carry out tests on the gas.
Students record observations in a table.
Guided discussion.
Ammonium nitrate.
K.L.B. BK III
PP. 139-141

Longhorn
Book III
PP 195-6
3 1-2
NITROGEN & ITS COMPOUNDS.
Properties and uses of Nitrogen (I) oxide.
Nitrogen (II) oxide. Lab preparation.
Properties of the gas.
By the end of the lesson, the learner should be able to:
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.

To describe lab preparation of nitrogen (II) oxide.
Q/A: Deductions from tests carried out.
Discussion of chemical properties and writing of equations.

Teacher elucidates uses of nitrogen (1) oxide.

Class experiment: Preparation and carrying out tests on the gas.
Observations recorded in a table.
charts
Dil nitric acid, copper turnings.
charts

K.L.B. BK III
P. 141
Longhorn
Book III
PP 191-2

K.L.B. BK III
P. 142
Longhorn
Book III
PP 200-1
3 3
NITROGEN & ITS COMPOUNDS.
Nitrogen (1V) oxide Lab preparation.
By the end of the lesson, the learner should be able to:
To describe nitrogen (IV) oxide lab preparation.
Teacher demonstration: - Preparation of the gas and corresponding equation.
Tests on the gas and make observations.
Conc. nitric acid, copper turnings.
K.L.B. BK III
PP. 144-145
3 4
NITROGEN & ITS COMPOUNDS.
Properties of Nitrogen (IV) oxide.
By the end of the lesson, the learner should be able to:
To list down physical properties of nitrogen (IV) oxide
To describe chemical properties of nitrogen (IV) oxide
To state uses of nitrogen (1V) oxide.
Deduce physical properties from the table of observations.
To describe chemical properties from the table of observations.
Discuss uses of nitrogen (1V) oxide.
charts

K.L.B. BK III
PP. 144-147

Longhorn
Book III
P 204
3 5
NITROGEN & ITS COMPOUNDS.
Ammonia. Lab preparation of ammonia.
By the end of the lesson, the learner should be able to:
To describe lab preparation of ammonia
Q/A: Structure of ammonia.
Group experiments: Preparation of ammonia.
Tests on the gas.
Ca(OH)2, NH4Cl Solutions, CaO, litmus papers..M THREE CHEMISTRY TERM TWO 20....
K.L.B. BK III
PP. 147-148
4 1-2
NITROGEN & ITS COMPOUNDS.
Properties of ammonia.
Solubility of ammonia.
Reaction of ammonia with metal ions.
By the end of the lesson, the learner should be able to:
To list down physical properties of ammonia.
To prepare aqueous solution of ammonia.


To carry out tests of aqueous ammonia on metal ions.
Deduce physical properties from the observations above.
Discuss chemical properties from the observations above.
Write down chemical equations.

Teacher demonstration: - Preparation of aqueous solution of ammonia.

Class experiments: -
Students record observations when drops of aqueous ammonia are added, then in excess.
charts
2 cm Solutions containing various metal ions.

K.L.B. BK III
P. 150

K.L.B.
BK III
PP. 152-153
4 3
NITROGEN & ITS COMPOUNDS.
Reaction of ammonia with metal ions.
By the end of the lesson, the learner should be able to:
To prepare aqueous solution of ammonia.


To carry out tests of aqueous ammonia on metal ions.
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
PP. 152-153
4 4
NITROGEN & ITS COMPOUNDS.
Ionic equations of above reactions.
By the end of the lesson, the learner should be able to:
To write iIonic equations of above reactions.
Discuss precipitation of metal hydroxides by aqueous ammonia.
Confirmatory tests for various concentrations.
charts
K.L.B. BK III
P.154

Longhorn BK III
P 223
4 5
NITROGEN & ITS COMPOUNDS.
Burning ammonia in the air.
By the end of the lesson, the learner should be able to:
To describe burning ammonia in the air.
Teacher demonstration
Discussion
Chemical equations of reactions.
Conc. Ammonium solution
Hot platinum rod
Oxygen.
K.L.B.
BK III
P. 158
Longhorn
Book III
PP 219
5 1-2
NITROGEN & ITS COMPOUNDS.
Reaction of ammonia with copper (II) Oxide.
Haber process.
Uses of ammonia.
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.
To list down uses of ammonia.
To list down nitrogenous fertilizers.
Teacher demonstration and discussion.
Write down equations for the reactions.
Teacher elucidates uses of ammonia and nitrogenous fertilizers.
Granular CuCl2
Combustion tube,
Dry ammonia
U-tube
Gas jar.
Chart- schematic diagram.
charts

K.L.B.
BK III
P. 158
K.L.B. BK III
P. 161

Longhorn
Book III
PP 126 -226
5 3
NITROGEN & ITS COMPOUNDS.
Nitric acid. Lab preparation.
By the end of the lesson, the learner should be able to:
To describe lab preparation of nitric acid.
Teacher demonstration.
Write equations of reaction.
Discussion.
Retort stand
Conc. H2SO4
KNO3
K.L.B. BK III
P. 163
5 4
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
5 5
NITROGEN & ITS COMPOUNDS.
Reaction of dilute Nitric acid with metals.
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.
Class experiment:- making observations and recording them in a table.
Discuss the observations.
Write down equations for the reactions.
Magnesium
Zinc
Copper
K.L.B. BK III
PP. 165-166

Longhorn
Book III
PP 166-8
6 1-2
NITROGEN & ITS COMPOUNDS.
Nitric acid and carbonates.
Reaction of dil. nitric acid with hydrogen carbonates.
By the end of the lesson, the learner should be able to:
To describe action of nitric acid on carbonates and hydrogen carbonates.
Write equations for reaction of dil. nitric acid with hydrogen carbonates.
Group experiments: - Action of Nitric acid on hydrogen carbonates.
Discussion and corresponding equations.
Solutions of
Na2CO3
NaHCO3
ZnCO3
CuCO3
K.L.B. BK III
P. 167

Longhorn
Book III
229-30
6 3
NITROGEN & ITS COMPOUNDS.
Dilute nitric acid and metal hydroxides and oxides.
By the end of the lesson, the learner should be able to:
Predict results of reacting dilute nitric acid with metal hydroxides and oxides.
Group experiments & writing equations for the reactions.
Metal hydroxides.
K.L.B. BK III
P. 168

Longhorn
Book III
PP 238-240
6 4
NITROGEN & ITS COMPOUNDS.
Reaction of nitric acid as an oxidizing agent.
By the end of the lesson, the learner should be able to:
Describe reactions of nitric acid as an oxidizing agent.
Class experiments: -
Explain observations made.
Nitric acid acidified iron sulphate, sulphur, and copper metal.
K.L.B. BK III
PP. 169-170

Longhorn Book III
PP 239 -240
6 5
NITROGEN & ITS COMPOUNDS.
Uses of nitric acid & nitrates.
By the end of the lesson, the learner should be able to:
To state uses of nitrates.
To describe preparation of nitrates.
Discussion
Equations for the reactions for preparation of nitrates.
charts
K.L.B. BK III
P. 171

Longhorn Book III
PP 240
7 1-2
NITROGEN & ITS COMPOUNDS.
Action of heat on nitrates.
Test for nitrates.
By the end of the lesson, the learner should be able to:
To write equations of decomposition of nitrates on heating.
To carry out tests on nitrates.
Discuss above observations.
Write relevant equations.

Class experiments.
Make observations and deductions.
Discuss the brown ring test for nitrates.
charts
K.L.B. BK III
P 172
K.L.B. BK III
PP 173-174

Longhorn
Book III
PP 243
7 3
NITROGEN & ITS COMPOUNDS.
Test for nitrates.
By the end of the lesson, the learner should be able to:
To carry out tests on nitrates.
Class experiments.
Make observations and deductions.
Discuss the brown ring test for nitrates.
charts
K.L.B. BK III
PP 173-174

Longhorn
Book III
PP 243
7 4
NITROGEN & ITS COMPOUNDS.
Nitrogen compounds and the environment.
By the end of the lesson, the learner should be able to:
To explain the pollution of nitrogen compounds in the environment.
To state ways of reducing environmental pollution by nitrogen compounds.
Brief guided discussion.
charts
K.L.B.BK III
PP. 173-174

Longhorn
Book III
PP 244-6
7 5
SULPHUR AND ITS COMPOUNDS
Extraction of sulphur.
Allotropes of sulphur.
By the end of the lesson, the learner should be able to:

To describe extraction of sulphur by Frasch process.

Illustrate and discuss extraction of sulphur.
Chart-the Frasch process.
video
K.L.B. BK III
PP.180-181
Longhorn
Book III
PP 126-129
8

Midterm exams

9 1-2
SULPHUR AND ITS COMPOUNDS
Physical properties of sulphur. Heating of sulphur.
Chemical properties of sulphur.
By the end of the lesson, the learner should be able to:
To list physical properties of sulphur.

To describe effects of heat on sulphur.
To investigate and describe chemical properties of sulphur.
Class experiment:
Solubility of sulphur in water, benzene, e.t.c,.
Class experiments:
Heating sulphur gently then strongly.
Discuss the observations.

Group experiments.
Discuss observations.
Write corresponding equations.
charts
K.L.B. BK III
P.184
Longhorn I
Book III
PP 253-255

K.L.B.BK III
PP.188-190
Longhorn
Book III
PP 256-8
9 3
SULPHUR AND ITS COMPOUNDS
Chemical properties of sulphur.
By the end of the lesson, the learner should be able to:
To investigate and describe chemical properties of sulphur.
Group experiments.
Discuss observations.
Write corresponding equations.
charts
K.L.B.BK III
PP.188-190
Longhorn
Book III
PP 256-8
9 4
SULPHUR AND ITS COMPOUNDS
Uses of sulphur. Sulphur dioxide.
Physical properties of sulphur dioxide.
By the end of the lesson, the learner should be able to:
State uses of sulphur.
Describe lab. preparation of sulphur dioxide.
Teacher elucidates uses of sulphur.
Teacher demonstration:-
Preparation of sulphur dioxide in a fume chamber/in the open.
Carrying out tests on the gas.
charts
text book
K.L.B.BK III
PP 191- 192
Longhorn Book
P 258
9 5
CHLORINE & ITS COMPOUNDS
Lab. preparation of chlorine gas.
By the end of the lesson, the learner should be able to:


Describe laboratory preparation of chlorine gas.


Teacher demonstration ? gas prep. tests on the gas.

Conc. HCl, Manganese (IV) oxide.

K.L.B.BK III
P. 219
Longhorn
Book III
PP 298-9
10 1-2
CHLORINE & ITS COMPOUNDS
Physical properties of chlorine.
Chemical properties of chlorine ? reaction with water.
By the end of the lesson, the learner should be able to:
State physical properties of chlorine.
To investigate and explain reaction of chlorine with water.
Q/A: Relate the properties to the method of collection of the gas.
Write equations for the reaction leading to formation of chlorine.

Teacher demonstration:
Writing chemical equations.
charts
Moist blue litmus papers.
K.L.B.BK III
P. 220.
Longhorn
Book III
P 301

K.L.B.BK III
P. 222
Longhorn
Book III
PP 301-2
10 3
CHLORINE & ITS COMPOUNDS
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 metals / non-metals.
Teacher demonstration:
Discussion.
Writing chemical equations.
textbook
K.L.B.BK III
PP.
224 -225
Longhorn
Book III
PP 303-5
10 4
CHLORINE & ITS COMPOUNDS
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 metals / non-metals.
Teacher demonstration:
Discussion.
Writing chemical equations.
textbook
K.L.B.BK III
PP.
224 -225
Longhorn
Book III
PP 303-5
10 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
11 1-2
CHLORINE & ITS COMPOUNDS
Chlorine and alkalis.
Test for chlorides.
By the end of the lesson, the learner should be able to:
To investigate and explain reaction of chlorine with alkalis.
To carry out tests for chlorides.
Teacher demonstration: Bubbling chlorine with dilute cold / hot NaOH solution.
Make observations and account for them.

Class expts.
Discuss observations, results.
Write chemical equations for the reactions.
Cold / hot NaOH solutions.
Expt. Worksheets.
Zinc chloride, litmus paper, conc. Sulphuric acid.
K.L.B.BK III
P. 228
Longhorn Book III
PP 313-4

K.L.B.BK III
P. 230
Longhorn Book III
PP 318-319
11 3
CHLORINE & ITS COMPOUNDS
Uses of chlorine gas.
By the end of the lesson, the learner should be able to:
To state uses of chlorine.
Teacher elucidates uses of chlorine.
K.L.B.BK III
P. 231
Longhorn Book III
PP 320
11 4
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
11 5
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
12 1-2
CHLORINE & ITS COMPOUNDS
Aqueous hydrogen chloride.
Further chemical properties of hydrogen chloride gas.
By the end of the lesson, the learner should be able to:
To prepare aqueous hydrogen chloride.
To determine chemical properties of hydrogen chloride gas.
To carry out confirmatory test for hydrogen chloride gas.
Class experiment leading to deduction of chemical properties of hydrogen chloride gas.

Class experiment leading to deduction of further chemical properties of hydrogen chloride gas / confirmatory test for hydrogen chloride gas.
Distilled water.
Ammonia solution.

K.L.B.BK III
P. 234
K.L.B. BK III
PP.
235 -223
Longhorn
Book III
PP 327-331
12 3
CHLORINE & ITS COMPOUNDS
Large-scale production of hydrochloric acid.
By the end of the lesson, the learner should be able to:
Identify raw materials for manufacture of hydrochloric acid in large scale.
Describe the manufacturing process.
Discussion and giving relevant equations.
charts
K.L.B.BK III
P. 237
Longhorn Book III
P 330
12 4
CHLORINE & ITS COMPOUNDS
Uses of hydrochloric acid.
By the end of the lesson, the learner should be able to:
To state uses of hydrochloric acid.
Brief discussion.
charts
K.L.B. BK III
P. 237
Longhorn Book III
P 331-3
12 5
CHLORINE & ITS COMPOUNDS
Effects of hydrochloric acid on the environment.
By the end of the lesson, the learner should be able to:
To explain effects of hydrochloric acid on the environment.
Discussion and explanation.
Assignment.
charts
K.L.B. BK III
P 238.
Longhorn Book III
PP 334-8
13

End term exam

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