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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
THE MOLE
Volumetric Analysis.
Concentration of a solution.
Concentration of HCl.
By the end of the lesson, the learner should be able to:
Define concentration of a solution.
Find concentration of a solution in grams/litre and moles/litre.
Q/A: - Equivalent ratios, e.g. 4g dissolved in 500cm? and
8g in 1 litre.
Worked examples on concentration of solutions.
chart
K.L.B. BK III
PP. 46-48

Longhorn Book III PP 76-81
2 2
Volumetric Analysis.
Redox Titration Reactions.
By the end of the lesson, the learner should be able to:
To standardize a solution with an iron (II) salt.
Experiment and calculations.
Potassium Magnate
(VII)
K.L.B. BK III
PP. 74-75

Longhorn
Book III
PP 114-115
2 2-3
Volumetric Analysis.
Redox Titration Reactions.
Water of crystallization.
By the end of the lesson, the learner should be able to:
To standardize a solution with an iron (II) salt.
To determine amount of water of crystallization in ammonium iron sulphate crystals.
Experiment and calculations.
Teacher exposes the formula of water of crystallization.
Class experiment.
Filling in a table of results.
Potassium Magnate
(VII)
Ammonium
Iron (II)
Sulphate crystals.
Dilute sulphuric (VI) acid.
K.L.B. BK III
PP. 74-75

Longhorn
Book III
PP 114-115

K.L.B. BK III
P. 76
2 4
Volumetric Analysis.
Formula mass of ammonium iron (II) sulphate.
By the end of the lesson, the learner should be able to:
To find formula mass of ammonium iron (II) sulphate.
Calculations from experimental results.
student book
K.L.B. BK III
PP. 76 -77
2 5
Volumetric Analysis.
Formula mass of a given salt.
Atomicity of gases.
By the end of the lesson, the learner should be able to:
To solve numerical problems involving water of crystallization.
Problem solving from sample results.
student book
K.L.B. BK III
P.77
3 1
Volumetric Analysis.
Mass and volume of gases.
By the end of the lesson, the learner should be able to:
To determine mass and volume of gases.
Teacher demonstration: - Determining mass of known volumes of oxygen / CO2.
Lubricated syringes
Oxygen/
CO2.
K.L.B. BK III
P. 81
Longhorn BK III
PP 126-127
3 2-3
Volumetric Analysis.
Molar gas volume.
Combining volumes of gases.
Gay Lussac?s Law.
By the end of the lesson, the learner should be able to:
To define molar gas volume.
To state Gay Lussac?s Law.
To compare Gay Lussac?s Law with Avogadro?s Law.
To solve numericals using Gay Lussac?s Law.
Use the above results to describe volume of one mole of a gas.
Discuss molar gas volume at R.T.P and S.T.P conditions.

Teacher exposes the law; and compares it with Gay Lussac?s Law.
Worked examples.
Supervised practice.
student book
K.L.B. BK III
79 ? 80
Longhorn
Book III
PP 126-127

K.L.B. BK III
P. 85

Longhorn
Book III
PP 129-131
3 4
ORGANIC CHEMISTRY (I)
Hydrocarbons.
By the end of the lesson, the learner should be able to:
To define organic Chemistry.
To define a hydrocarbon.
To identify groups of hydrocarbons.
To describe the carbon atom.
Discuss composition of the carbon atom; hence deduce number of valence electrons.
Exposition of new terms.
student book
K.L.B. BK III
P. 92
Longhorn
Book III
P 135
3 5
ORGANIC CHEMISTRY (I)
Alkanes.
By the end of the lesson, the learner should be able to:
To identify various alkanes.
To list sources of alkanes.
To state uses of different fractions of crude oil.
To define cracking of alkanes.
Expose various alkanes.
Discuss the biomass digester, fractional distillation of crude oil and uses of the fractions.
Discuss the cracking process.
Chart of biomass digester.
K.L.B. BK III
PP. 93-94

Longhorn
Book III
PP 135-6
4 1
ORGANIC CHEMISTRY (I)
Naming Alkanes.
Members of Alkane series.
By the end of the lesson, the learner should be able to:
To identify various alkanes.
To define a homologous series.
Discussion and exposition of new concepts.
student book
Chart- structure of alkanes.
K.L.B. BK III
PP. 94-98
Longhorn
Book III
PP 136-139
4 2-3
ORGANIC CHEMISTRY (I)
Isomerism in alkanes.
Laboratory preparation of a given alkane.
Trend in physical properties of alkanes.
By the end of the lesson, the learner should be able to:
To draw and name isomers of simple hydrocarbons.
To describe laboratory preparation of a given alkane.
To state physical properties of the gases prepared.
Discussion and exposition of new concepts.
Teacher demonstration.
Discussion.
Models.
Sodium ethanoate, sodalime,
Pestle and mortar.
student book
K.L.B. BK III
PP. 101-102 Longhorn Book III
PP 141-2

K.L.B. BK III
P. 103

Longhorn
Book III
PP 146
4 4
ORGANIC CHEMISTRY (I)
Chemical properties of alkanes.
By the end of the lesson, the learner should be able to:
Describe chemical properties of alkanes.
Discussion
Examples of balanced equations.
student book
K.L.B. BK III
P. 107
Longhorn
Book III
PP 148-9
4 5
ORGANIC CHEMISTRY (I)
Substitution reactions involving alkanes. Uses of alkanes.
Alkenes. Molecular formulae of alkenes.
By the end of the lesson, the learner should be able to:
To describe substitution reactions involving alkanes.

To list down uses of alkanes.
Discussion


Teacher elucidates uses of alkanes.
student book
K.L.B. BK III
P. 108

Longhorn
Book III
PP 149-50
5 1
ORGANIC CHEMISTRY (I)
Naming alkenes.
By the end of the lesson, the learner should be able to:
To name various alkenes.
Q/Q: Nomenclature in alkenes.
Compare alkenes; hence deduce names of various alkenes.
student book
K.L.B. BK III
PP. 110-113
Longhorn
Book III
PP 154-6
5 2-3
ORGANIC CHEMISTRY (I)
Alkene isomerism.
Preparing ethene in the lab.
Physical properties of ethene.
By the end of the lesson, the learner should be able to:
Differentiate between branching and positional isomerism.
To describe physical properties of ethene and other alkenes.
Discussion and drawing of molecular structures.
To discuss physical properties of ethene and other alkenes.

student book
chart
K.L.B. BK III
P. 113
Longhorn
Book III
PP 158-60
K.L.B. BK III
PP. 116-117
Longhorn Book III
PP 126-129
165-6
5 4
ORGANIC CHEMISTRY (I)
Chemical properties of ethene.
Alkenes and oxidizing agents.
By the end of the lesson, the learner should be able to:
To explain halogenation and hydrogenation reactions.
Discussion and drawing structures.
charts

KLB BK III
PP. 118-119
Longhorn
Book III
PP 166-8
5 5
ORGANIC CHEMISTRY (I)
Uses of alkenes & Topic review.
By the end of the lesson, the learner should be able to:
To list down uses of alkenes.
Teacher elucidates uses of alkenes.

Assignment.
charts
K.L.B. BK III
P. 121 Longhorn Book
PP 170-1
6 1
ORGANIC CHEMISTRY (I)
Alkynes. Nomenclature.
By the end of the lesson, the learner should be able to:
To identify various alkynes.
To name and draw structures of alkynes.
Discuss a table of members of alkynes.
Review naming of alkanes and alkene and compare this with naming of alkynes.
charts
K.L.B. BK III
P. 122-123
Longhorn
Book III
PP 126-129 171-5
6 2-3
ORGANIC CHEMISTRY (I)
Isomerism in alkynes.
Physical properties of ethyne.
Chemical properties of ethyne.
By the end of the lesson, the learner should be able to:
To draw structure showing positional and branching isomerism.
To list down physical properties of ethyne.
Discussion and drawing structures.
Teacher demonstration: Preparation of ethyne.
Deduce properties of other alkynes.
charts
K.L.B. BK III
PP. 124-125
Longhorn
Book III
PP 176-8

K.L.B. BK III
PP. 125-126
Longhorn
Book III
PP 197-80
6 4
ORGANIC CHEMISTRY (I)
NITROGEN & ITS COMPOUNDS.
Tests for alkynes. Uses of alkynes.
Isolation of nitrogen from air.
By the end of the lesson, the learner should be able to:
To describe tests for alkynes and state uses of alkynes.
Discussion and explanations.

Assignment.
charts
Aspirator, copper turnings, gas jar, combustion tube, trogh.
K.L.B. BK III
P.130

Longhorn Book III
PP 180-84
6 5
NITROGEN & ITS COMPOUNDS.
Industrial production of nitrogen.
By the end of the lesson, the learner should be able to:
Describe industrial production of nitrogen.
Discussion and description.
Drawing schematic diagram for the process.
charts
K.L.B. BK III
PP.135-136

Longhorn Book
PP 188-9
7 1
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.
Teacher demonstration:
Students? record observations made from tests on the gas.
Writing equations of reactions.
Ammonium chloride, sodium nitrate
charts
K.L.B. BK III
P. 137

Longhorn
Book III
P 190-1
7 2
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
7 2-3
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.
charts
K.L.B. BK III
PP. 139-141

Longhorn
Book III
PP 195-6


K.L.B. BK III
P. 141
Longhorn
Book III
PP 191-2
7 4
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
7 5
NITROGEN & ITS COMPOUNDS.
Properties of the gas.
Nitrogen (1V) oxide Lab preparation.
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
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.
charts
Conc. nitric acid, copper turnings.
K.L.B.
BK III
P. 143

Longhorn
Book III
PP 192-200
8 1
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








8 2-3
NITROGEN & ITS COMPOUNDS.
Ammonia. Lab preparation of ammonia.
Properties of ammonia.
Solubility of ammonia.
By the end of the lesson, the learner should be able to:
To describe lab preparation of ammonia
To describe an experiment to determine solubility of ammonia.
Q/A: Structure of ammonia.
Group experiments: Preparation of ammonia.
Tests on the gas.
Teacher demonstration.

Discussion.
Ca(OH)2, NH4Cl Solutions, CaO, litmus papers..M THREE CHEMISTRY TERM TWO 20....
charts
K.L.B. BK III
PP. 147-148

K.L.B. BK III
P. 150
8 4
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
8 5
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
9

MID TERM BREAK

10 1
NITROGEN & ITS COMPOUNDS.
Burning ammonia in the air.
Reaction of ammonia with copper (II) Oxide.
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.
Granular CuCl2
Combustion tube,
Dry ammonia
U-tube
Gas jar.
K.L.B.
BK III
P. 158
Longhorn
Book III
PP 219
10 2-3
NITROGEN & ITS COMPOUNDS.
Haber process.
Uses of ammonia.
Nitric acid. Lab preparation.
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.

To list down uses of ammonia.
To list down nitrogenous fertilizers.
Discussion and explanations.
Teacher elucidates uses of ammonia and nitrogenous fertilizers.
Chart- schematic diagram.
charts
Retort stand
Conc. H2SO4
KNO3

K.L.B. BK III
PP. 159-160
225-226
K.L.B. BK III
P. 161

Longhorn
Book III
PP 126 -226
10 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
10 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
11 1
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
11 2-3
NITROGEN & ITS COMPOUNDS.
Reaction of dil. nitric acid with hydrogen carbonates.
Dilute nitric acid and metal hydroxides and oxides.
Reaction of nitric acid as an oxidizing agent.
By the end of the lesson, the learner should be able to:
Write equations for reaction of dil. nitric acid with hydrogen carbonates.
Describe reactions of nitric acid as an oxidizing agent.
Discussion and corresponding equations.
Class experiments: -
Explain observations made.
Metal hydroxides.
Nitric acid acidified iron sulphate, sulphur, and copper metal.
K.L.B. BK III
P. 167

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

Longhorn Book III
PP 239 -240
11 4
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
11 5
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
12 1
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
12 2
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
12-14

End term exams


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