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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
NITROGEN & ITS COMPOUNDS.
Isolation of nitrogen from air.
Industrial production of nitrogen.
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.
charts
K.L.B. BK III
PP. 134-135

Longhorn Book
P 186
2 2-3
NITROGEN & ITS COMPOUNDS.
Lab. preparation of nitrogen.
Physical and chemical properties of nitrogen. Uses of nitrogen.
By the end of the lesson, the learner should be able to:
Describe lab preparation of nitrogen.
State physical and chemical properties of nitrogen.


List down uses of nitrogen.

Teacher demonstration:
Students? record observations made from tests on the gas.
Writing equations of reactions.
Discussion and writing equations.
Ammonium chloride, sodium nitrate
charts
K.L.B. BK III
P. 137

Longhorn
Book III
P 190-1

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.
Properties and uses of Nitrogen (I) oxide.
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.
Q/A: Deductions from tests carried out.
Discussion of chemical properties and writing of equations.

Teacher elucidates uses of nitrogen (1) oxide.
charts

K.L.B. BK III
P. 141
Longhorn
Book III
PP 191-2
3 1
NITROGEN & ITS COMPOUNDS.
Nitrogen (II) oxide. Lab preparation.
By the end of the lesson, the learner should be able to:
To describe lab preparation of nitrogen (II) oxide.
Class experiment: Preparation and carrying out tests on the gas.
Observations recorded in a table.
Dil nitric acid, copper turnings.
K.L.B. BK III
P. 142
Longhorn
Book III
PP 200-1
3 2-3
NITROGEN & ITS COMPOUNDS.
Properties of the gas.
Nitrogen (1V) oxide Lab preparation.
Properties of Nitrogen (IV) oxide.
By the end of the lesson, the learner should be able to:
To list down physical properties of nitrogen (II) oxide
To describe chemical properties of nitrogen (11) oxide
To list down physical properties of nitrogen (IV) oxide
To describe chemical properties of nitrogen (IV) oxide
To state uses of nitrogen (1V) oxide.
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.

Deduce physical properties from the table of observations.
To describe chemical properties from the table of observations.
Discuss uses of nitrogen (1V) oxide.




charts
Conc. nitric acid, copper turnings.
K.L.B.
BK III
P. 143

Longhorn
Book III
PP 192-200


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

Longhorn
Book III
P 204








3 4
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
3 5
NITROGEN & ITS COMPOUNDS.
Properties of ammonia.
Solubility of ammonia.
By the end of the lesson, the learner should be able to:
To list down physical properties of ammonia.
Deduce physical properties from the observations above.
Discuss chemical properties from the observations above.
Write down chemical equations.
charts

K.L.B. BK III
P. 150
4 1
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 2-3
NITROGEN & ITS COMPOUNDS.
Reaction of ammonia with metal ions.
Ionic equations of above reactions.
Burning ammonia in the air.
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.
To write iIonic equations of above reactions.
Teacher demonstration: - Preparation of aqueous solution of ammonia.

Class experiments: -
Students record observations when drops of aqueous ammonia are added, then in excess.
Discuss precipitation of metal hydroxides by aqueous ammonia.
Confirmatory tests for various concentrations.
2 cm Solutions containing various metal ions.
charts
Conc. Ammonium solution
Hot platinum rod
Oxygen.

K.L.B.
BK III
PP. 152-153

K.L.B. BK III
P.154

Longhorn BK III
P 223
4 4
NITROGEN & ITS COMPOUNDS.
Reaction of ammonia with copper (II) Oxide.
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.
Teacher demonstration and discussion.
Write down equations for the reactions.
Granular CuCl2
Combustion tube,
Dry ammonia
U-tube
Gas jar.

K.L.B.
BK III
P. 158
4 5
NITROGEN & ITS COMPOUNDS.
Haber process.
Uses of ammonia.
By the end of the lesson, the learner should be able to:
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.
Discussion and explanations.
Chart- schematic diagram.
charts

K.L.B. BK III
PP. 159-160
225-226
5 1
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 2-3
NITROGEN & ITS COMPOUNDS.
Nitric acid Industrial manufacture.
Reaction of dilute Nitric acid with metals.
By the end of the lesson, the learner should be able to:
To describe industrial manufacture of nitric acid.
To describe reaction of dilute nitric acid with metals.
To write equations of reactions of dilute nitric acid with metals.
Discussion and writing equations.
Class experiment:- making observations and recording them in a table.
Discuss the observations.
Write down equations for the reactions.
Chart
Schematic diagram.
Magnesium
Zinc
Copper
K.L.B. BK III
P. 164

K.L.B. BK III
PP. 165-166

Longhorn
Book III
PP 166-8
5 4
NITROGEN & ITS COMPOUNDS.
Nitric acid and carbonates.
By the end of the lesson, the learner should be able to:
To describe action of nitric acid on carbonates and hydrogen carbonates.
Group experiments: - Action of Nitric acid on hydrogen carbonates.
Solutions of
Na2CO3
NaHCO3
ZnCO3
CuCO3
K.L.B. BK III
P. 167

Longhorn
Book III
229-30
5 5
NITROGEN & ITS COMPOUNDS.
Reaction of dil. nitric acid with hydrogen carbonates.
By the end of the lesson, the learner should be able to:
Write equations for reaction of dil. nitric acid with hydrogen carbonates.
Discussion and corresponding equations.
K.L.B. BK III
P. 167
6

Exam

7 1
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
7 2-3
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.

charts
K.L.B. BK III
PP. 169-170

Longhorn Book III
PP 239 -240

K.L.B. BK III
P. 171

Longhorn Book III
PP 240
7 4
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.
charts
K.L.B. BK III
P 172
7 5
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
8

Midterm break

9 1
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
9 2-3
SULPHUR AND ITS COMPOUNDS
Extraction of sulphur.
Allotropes of sulphur.
Physical properties of sulphur. Heating of sulphur.
By the end of the lesson, the learner should be able to:

To describe extraction of sulphur by Frasch process.
To list physical properties of sulphur.

To describe effects of heat on sulphur.

Illustrate and discuss extraction of sulphur.

Class experiment:
Solubility of sulphur in water, benzene, e.t.c,.
Class experiments:
Heating sulphur gently then strongly.
Discuss the observations.
Chart-the Frasch process.
video
charts
K.L.B. BK III
PP.180-181
Longhorn
Book III
PP 126-129

K.L.B. BK III
P.184
Longhorn I
Book III
PP 253-255
9 4
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 5
SULPHUR AND ITS COMPOUNDS
Uses of sulphur. 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
K.L.B.BK III
PP 191- 192
Longhorn Book
P 258
10 1
SULPHUR AND ITS COMPOUNDS
Physical properties of sulphur dioxide.
By the end of the lesson, the learner should be able to:
To list down physical properties of sulphur dioxide.
Discuss the above tests.
text book
K.L.B.BK III
PP 193
Longhorn
Book III
PP 262-3
10 2-3
CHLORINE & ITS COMPOUNDS
Lab. preparation of chlorine gas.
Physical properties of chlorine.
Chemical properties of chlorine ? reaction with water.
By the end of the lesson, the learner should be able to:


Describe laboratory preparation of chlorine gas.

To investigate and explain reaction of chlorine with water.


Teacher demonstration ? gas prep. tests on the gas.
Teacher demonstration:
Writing chemical equations.
Conc. HCl, Manganese (IV) oxide.
charts
Moist blue litmus papers.

K.L.B.BK III
P. 219
Longhorn
Book III
PP 298-9

K.L.B.BK III
P. 222
Longhorn
Book III
PP 301-2
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
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
11 1
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 2-3
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 4
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 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
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
12 2-3
CHLORINE & ITS COMPOUNDS
Further chemical properties of hydrogen chloride gas.
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.
Class experiment leading to deduction of further chemical properties of hydrogen chloride gas / confirmatory test for hydrogen chloride gas.
Ammonia solution.
K.L.B. BK III
PP.
235 -223
Longhorn
Book III
PP 327-331
12 4
CHLORINE & ITS COMPOUNDS
Large-scale production of hydrochloric acid.
Uses 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 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

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