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Chemistry
Form 3 2025
TERM II
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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
1

Opening and revision

2 1
THE MOLE
Concentration of a solution.
Molarity of a solution.
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
student book
K.L.B. BK III
PP. 46-48

Longhorn Book III PP 76-81
2 2-3
THE MOLE
Preparation of molar solutions.
Calculators on molar solutions.
Dilution of solutions.
Stoichiometry of a chemical reaction.
By the end of the lesson, the learner should be able to:
Define molar solutions.
Prepare molar solutions.
Calculate molarity of a solution after dilution.
Q/A: - Description of preparation of molar solutions.

Group experiments.
Calculations.
Volumetric flasks, teat droppers/wash bottle.
Sodium hydrogen pellets.
Weighing balance.
student book
student book
CuSO4 solution and iron metal.
K.L.B. BK III
PP. 50-51

Longhorn
Book III
PP 78-81

K.L.B. BK III
PP. 76-81
2 4
THE MOLE
Stoichiometric equations.
By the end of the lesson, the learner should be able to:
To define a stoichiometric equation.
To write stoichiometric equations of the above reactions.
student book
K.L.B. BK III
Longhorn Book III PP 14-16
PP. 88-93
2 5
THE MOLE
Stoichiometric equations of various reactions.
By the end of the lesson, the learner should be able to:
To investigate and determine Stoichiometric equations of various reactions.
Class experiments.

Problem solving.
student book
K.L.B. BK III
P. 62
3 1
Volumetric Analysis.
Apparatus used in titration experiments.
Titration process.
By the end of the lesson, the learner should be able to:
To use and read a pipette and a burette.
Discussion and practical use of the apparatus.
Emphasis is laid on need to sterilize the apparatus after use.
Pipettes
Burettes.
Indicators
Suitable acid and base.
K.L.B. BK III
PP. 63-64
Longhorn
Book III
PP 104-8
3 2
Volumetric Analysis.
Titration experiment (Neutralization reaction)
By the end of the lesson, the learner should be able to:
To carry out a titration experiment and obtain accurate results.
Class experiments: - To neutralize HCl with NaOH solution.
Fill in a table of results.
Find the average base used.
student book
K.L.B. BK III
P. 66

Longhorn Book III PP 108-114
3 2-3
Volumetric Analysis.
Titration experiment (Neutralization reaction)
Titration experiment (Neutralization reaction)
By the end of the lesson, the learner should be able to:
To carry out a titration experiment and obtain accurate results.
To carry out calculations from experimental results.
Class experiments: - To neutralize HCl with NaOH solution.
Fill in a table of results.
Find the average base used.

Step-by-step calculations.
student book
Calculators.
K.L.B. BK III
P. 66

Longhorn Book III PP 108-114

K.L.B. BK III
P 66
Longhorn Book III PP 108-114
3 4
Volumetric Analysis.
Basicity of an acid.
Standardization of HCl.
By the end of the lesson, the learner should be able to:
To define basicity of an acid.
Complete a table of number of replaceable hydrogen ions of an acid; hence define basicity of an acid.
Write corresponding ionic equations.
student book
Dilute HCl, Na2CO3 solutions.
K.L.B. BK III
P. 73
3 5
Volumetric Analysis.
Concentration of HCl.
By the end of the lesson, the learner should be able to:
To calculate concentration of HCl from experimental results.
Calculations & supervised practice.
K.L.B. BK III
PP. 74-75
4 1
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
4 2-3
Volumetric Analysis.
Water of crystallization.
Formula mass of ammonium iron (II) sulphate.
Formula mass of a given salt.
Atomicity of gases.
By the end of the lesson, the learner should be able to:
To determine amount of water of crystallization in ammonium iron sulphate crystals.
To solve numerical problems involving water of crystallization.
Teacher exposes the formula of water of crystallization.
Class experiment.
Filling in a table of results.
Problem solving from sample results.
Ammonium
Iron (II)
Sulphate crystals.
Dilute sulphuric (VI) acid.
student book
K.L.B. BK III
P. 76
K.L.B. BK III
P.77
4 4
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
4 5
Volumetric Analysis.
Molar gas volume.
Combining volumes of gases.
By the end of the lesson, the learner should be able to:
To define molar gas volume.
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.
student book
K.L.B. BK III
79 ? 80
Longhorn
Book III
PP 126-127
5 1
Volumetric Analysis.
Gay Lussac?s Law.
By the end of the lesson, the learner should be able to:
To state Gay Lussac?s Law.
To compare Gay Lussac?s Law with Avogadro?s Law.
To solve numericals using Gay Lussac?s Law.
Teacher exposes the law; and compares it with Gay Lussac?s Law.
Worked examples.
Supervised practice.
student book
K.L.B. BK III
P. 85

Longhorn
Book III
PP 129-131
5 2-3
ORGANIC CHEMISTRY (I)
Hydrocarbons.
Alkanes.
Naming Alkanes.
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.
To identify various alkanes.
To define a homologous series.
Discuss composition of the carbon atom; hence deduce number of valence electrons.
Exposition of new terms.
Discussion and exposition of new concepts.
student book
Chart of biomass digester.
K.L.B. BK III
P. 92
Longhorn
Book III
P 135

K.L.B. BK III
PP. 94-98
Longhorn
Book III
PP 136-139
5 4
ORGANIC CHEMISTRY (I)
Members of Alkane series.
Isomerism in alkanes.
By the end of the lesson, the learner should be able to:
To name members of alkane series and identify their characteristics.
To draw the structures of alkane series.
Discussion and exposition of new concepts.
Chart- structure of alkanes.
Models.
K.L.B. BK III
PP. 97-99

Longhorn Book III
PP 137-9
5 5
ORGANIC CHEMISTRY (I)
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 describe laboratory preparation of a given alkane.
To state physical properties of the gases prepared.
Teacher demonstration.
Discussion.
Sodium ethanoate, sodalime,
Pestle and mortar.
student book
K.L.B. BK III
P. 103

Longhorn
Book III
PP 146
6 1
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
6 2-3
ORGANIC CHEMISTRY (I)
Substitution reactions involving alkanes. Uses of alkanes.
Alkenes. Molecular formulae of alkenes.
Naming alkenes.
Alkene isomerism.
By the end of the lesson, the learner should be able to:
To describe substitution reactions involving alkanes.

To list down uses of alkanes.
To name various alkenes.
Discussion


Teacher elucidates uses of alkanes.

Q/Q: Nomenclature in alkenes.
Compare alkenes; hence deduce names of various alkenes.
student book
K.L.B. BK III
P. 108

Longhorn
Book III
PP 149-50

K.L.B. BK III
PP. 110-113
Longhorn
Book III
PP 154-6
6 4
ORGANIC CHEMISTRY (I)
Preparing ethene in the lab.
Physical properties of ethene.
By the end of the lesson, the learner should be able to:
To describe lab preparation of ethene.
Teacher demonstration: - Carry out tests on ethene as students note down the observations in a table.
chart
student book

K.L.B. BK III
P 162
6 5
ORGANIC CHEMISTRY (I)
Chemical properties of ethene.
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
7 1
ORGANIC CHEMISTRY (I)
Alkenes and oxidizing agents.
Uses of alkenes & Topic review.
By the end of the lesson, the learner should be able to:
To describe reactions of alkenes with oxidizing agents.
Review the double bonds in alkenes.
Review reduction process, oxidizing agent.
Discuss reactions of alkenes with conc. H2SO4, acidified potassium chromate.
Expose hydrolysis process.

charts

K.L.B. BK III
PP. 120-121


Longhorn
Book III
PP 166-8
7 2-3
ORGANIC CHEMISTRY (I)
Alkynes. Nomenclature.
Isomerism in alkynes.
Physical properties of ethyne.
By the end of the lesson, the learner should be able to:
To identify various alkynes.
To name and draw structures of alkynes.
To draw structure showing positional and branching isomerism.
Discuss a table of members of alkynes.
Review naming of alkanes and alkene and compare this with naming of alkynes.

Discussion and drawing structures.
charts
K.L.B. BK III
P. 122-123
Longhorn
Book III
PP 126-129 171-5

K.L.B. BK III
PP. 124-125
Longhorn
Book III
PP 176-8
7 4
ORGANIC CHEMISTRY (I)
Chemical properties of ethyne.
By the end of the lesson, the learner should be able to:
To describe combustion, halogenation and hydrogenation processes.
Discussion and writing of equations.
charts
K.L.B. BK III
PP. 127-129
Longhorn Book III
PP 180-184
7 5
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
8 1
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.
Discussion and description.
Drawing schematic diagram for the process.
charts
Ammonium chloride, sodium nitrate
K.L.B. BK III
PP.135-136

Longhorn Book
PP 188-9
8 2-3
NITROGEN & ITS COMPOUNDS.
Physical and chemical properties of nitrogen. Uses of nitrogen.
Nitrogen (I) oxide. Lab preparation.
By the end of the lesson, the learner should be able to:
State physical and chemical properties of nitrogen.


List down uses of nitrogen.


To describe Nitrogen (I) oxide.
Discussion and writing equations.
Teacher demonstration: -
Carry out tests on the gas.
Students record observations in a table.
Guided discussion.
charts
Ammonium nitrate.
K.L.B. BK III
P. 138

Longhorn
Book III
PP 191-2

K.L.B. BK III
PP. 139-141

Longhorn
Book III
PP 195-6
8 4
NITROGEN & ITS COMPOUNDS.
Properties and uses of Nitrogen (I) oxide.
Nitrogen (II) oxide. Lab preparation.
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
Dil nitric acid, copper turnings.

K.L.B. BK III
P. 141
Longhorn
Book III
PP 191-2
8 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
9

Midterm and midterm exams

10 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








10 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
10 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
10 5
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.
Discuss precipitation of metal hydroxides by aqueous ammonia.
Confirmatory tests for various concentrations.
charts
Conc. Ammonium solution
Hot platinum rod
Oxygen.
K.L.B. BK III
P.154

Longhorn BK III
P 223
11 1
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.
Teacher demonstration and discussion.
Write down equations for the reactions.
Granular CuCl2
Combustion tube,
Dry ammonia
U-tube
Gas jar.
Chart- schematic diagram.

K.L.B.
BK III
P. 158
11 2-3
NITROGEN & ITS COMPOUNDS.
Uses of ammonia.
Nitric acid. Lab preparation.
Nitric acid Industrial manufacture.
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 industrial manufacture of nitric acid.
Teacher elucidates uses of ammonia and nitrogenous fertilizers.
Discussion and writing equations.
charts
Retort stand
Conc. H2SO4
KNO3
Chart
Schematic diagram.
K.L.B. BK III
P. 161

Longhorn
Book III
PP 126 -226

K.L.B. BK III
P. 164
11 4
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 5
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.
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
12 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
12 2-3
NITROGEN & ITS COMPOUNDS.
Reaction of nitric acid as an oxidizing agent.
Uses of nitric acid & nitrates.
Action of heat on 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
12 4
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 5
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
13-14

End term Exam and closing


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