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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

Midterm

2 1
THE MOLE
Mole, molar mass and R.A.M.
Number of moles in a substance.
By the end of the lesson, the learner should be able to:
Define the term mole as a quantity of measurement.
Relate the mole to R.A.M and molar mass.
Discuss various analogies that lead to the definition of the mole.
Expose the meaning of R.A.M., Avogadro?s constant and molar mass.
Chart- table of molar masses of elements.
student book
K.L.B. BK III
PP. 27-31
Longhorn
Book III
PP 34-35
2 2
THE MOLE
Relative molecular mass & Relative formula mass.
By the end of the lesson, the learner should be able to:
Define relative molecular mass.
Calculate RMM of a compound.
Q/A: - Review formulae of compounds.
Complete a table of compounds and their molecular / formula mass.
Calculators.
K.L.B.BK III
PP. 34-35

Longhorn Book III PP 44-60
2 2-3
THE MOLE
Relative molecular mass & Relative formula mass.
Moles and Avogadro?s number.
By the end of the lesson, the learner should be able to:
Define relative molecular mass.
Calculate RMM of a compound.
Calculate number of particles in a given number of moles.
Q/A: - Review formulae of compounds.
Complete a table of compounds and their molecular / formula mass.

Review standard form of numbers.
Worked examples.
Supervised exercise.

Calculators.
K.L.B.BK III
PP. 34-35

Longhorn Book III PP 44-60

K.L.B.BK III
PP. 3132
Longhorn
Book III
PP 30-31
2 4
THE MOLE
Empirical Formula.
By the end of the lesson, the learner should be able to:
Determine empirical formula of a compound given percentage composition by mass.
Worked examples.
Supervised practice.

Assignment.
student book
K.L.B.
BK III P. 43

Longhorn Book III PP 66-71
2 5
THE MOLE
Molecular formula.
By the end of the lesson, the learner should be able to:
Define molecular formula of a compound.
Find molecular formula given percentage composition of a compound by mass.
Worked examples.

Supervised practice.
Calculators.
K.L.B.BK III
P. 45

Longhorn
Book III
PP 73-75
3 1
THE MOLE
Concentration 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
K.L.B. BK III
PP. 46-48

Longhorn Book III PP 76-81
3 2-3
THE MOLE
Molarity of a solution.
Preparation of molar solutions.
Calculators on molar solutions.
By the end of the lesson, the learner should be able to:
Define molarity of a solution.
Find molarity of a solution in M/dm?
Solve numerical calculations on molar solutions.
Problems on molar solutions.
Teacher explains that molarity of a solution is given in moles of the solute per litre.
Worked examples.
Supervised exercise.

Worked examples.
Supervised exercise.
Assignment.
student book
Volumetric flasks, teat droppers/wash bottle.
Sodium hydrogen pellets.
Weighing balance.
K.L.B. BK III
PP. 48-49

Longhorn
Book III
PP 76-81

K.L.B. BK III
P 51
Longhorn Book III PP 76-81
3 4
THE MOLE
Dilution of solutions.
Stoichiometry of a chemical reaction.
By the end of the lesson, the learner should be able to:
Calculate molarity of a solution after dilution.
Group experiments.
Calculations.
student book
CuSO4 solution and iron metal.
K.L.B. BK III
PP. 76-81
3 5
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
4 1
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
4 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 list sources of alkanes.
To state uses of different fractions of crude oil.
To define cracking of alkanes.
Discuss composition of the carbon atom; hence deduce number of valence electrons.
Exposition of new terms.
Expose various alkanes.
Discuss the biomass digester, fractional distillation of crude oil and uses of the fractions.
Discuss the cracking process.
student book
Chart of biomass digester.
student book
K.L.B. BK III
P. 92
Longhorn
Book III
P 135

K.L.B. BK III
PP. 93-94

Longhorn
Book III
PP 135-6
4 4
ORGANIC CHEMISTRY (I)
Members of Alkane series.
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.
K.L.B. BK III
PP. 97-99

Longhorn Book III
PP 137-9
4 5
ORGANIC CHEMISTRY (I)
Isomerism in alkanes.
Laboratory preparation of a given alkane.
By the end of the lesson, the learner should be able to:
To draw and name isomers of simple hydrocarbons.
Discussion and exposition of new concepts.
Models.
Sodium ethanoate, sodalime,
Pestle and mortar.
K.L.B. BK III
PP. 101-102 Longhorn Book III
PP 141-2
5 1
ORGANIC CHEMISTRY (I)
Trend in physical properties of alkanes.
By the end of the lesson, the learner should be able to:
To describe the trend in physical properties of alkanes.
Study a table of comparative properties of alkanes.
Make deductions from the table.
student book
K.L.B. BK III
P. 105

Longhorn
Book III
PP 148-9
5 2-3
ORGANIC CHEMISTRY (I)
Chemical properties of alkanes.
Substitution reactions involving alkanes. Uses of alkanes.
Alkenes. Molecular formulae of alkenes.
By the end of the lesson, the learner should be able to:
Describe chemical properties of alkanes.
To write molecular formulae of alkenes.
Discussion
Examples of balanced equations.
Examine table of members of alkenes.
To identify members of alkene series.
student book
K.L.B. BK III
P. 107
Longhorn
Book III
PP 148-9

K.L.B. BK III
PP 153-4
5 4
ORGANIC CHEMISTRY (I)
Naming alkenes.
Alkene isomerism.
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 5
ORGANIC CHEMISTRY (I)
Preparing ethene in the lab.
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

K.L.B. BK III
P 162
6 1
ORGANIC CHEMISTRY (I)
Physical properties of ethene.
Chemical properties of ethene.
By the end of the lesson, the learner should be able to:
To describe physical properties of ethene and other alkenes.
To discuss physical properties of ethene and other alkenes.

student book
charts
K.L.B. BK III
PP. 116-117
Longhorn Book III
PP 126-129
165-6
6 2-3
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.
To list down uses of alkenes.
Review the double bonds in alkenes.
Review reduction process, oxidizing agent.
Discuss reactions of alkenes with conc. H2SO4, acidified potassium chromate.
Expose hydrolysis process.


Teacher elucidates uses of alkenes.

Assignment.
charts

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


Longhorn
Book III
PP 166-8

K.L.B. BK III
P. 121 Longhorn Book
PP 170-1
6 4
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 5
ORGANIC CHEMISTRY (I)
Isomerism in alkynes.
Physical properties of ethyne.
By the end of the lesson, the learner should be able to:
To draw structure showing positional and branching isomerism.
Discussion and drawing structures.
charts
K.L.B. BK III
PP. 124-125
Longhorn
Book III
PP 176-8
7 1
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 2-3
ORGANIC CHEMISTRY (I)
NITROGEN & ITS COMPOUNDS.
Tests for alkynes. Uses of alkynes.
Isolation of nitrogen from air.
Industrial production of nitrogen.
By the end of the lesson, the learner should be able to:
To describe tests for alkynes and state uses of alkynes.



Describe isolation of nitrogen from air.
Discussion and explanations.

Assignment.



Teacher demonstration, explanations and equations.
charts
Aspirator, copper turnings, gas jar, combustion tube, trogh.
charts
K.L.B. BK III
P.130

Longhorn Book III
PP 180-84

K.L.B. BK III
PP. 134-135

Longhorn Book
P 186
7 4
NITROGEN & ITS COMPOUNDS.
Lab. preparation 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
K.L.B. BK III
P. 137

Longhorn
Book III
P 190-1
7 5
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
8 1
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
8 2-3
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 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.

Teacher elucidates uses of nitrogen (1) 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
Dil nitric acid, copper turnings.

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

K.L.B.
BK III
P. 143

Longhorn
Book III
PP 192-200
8 4
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.
Teacher demonstration: - Preparation of the gas and corresponding equation.
Tests on the gas and make observations.
Conc. nitric acid, copper turnings.
charts
K.L.B. BK III
PP. 144-145
8 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
9 1
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
9 2
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
9 2-3
NITROGEN & ITS COMPOUNDS.
Reaction of ammonia with metal ions.
Ionic equations of above reactions.
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

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

K.L.B. BK III
P.154

Longhorn BK III
P 223
9 4
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
9 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.
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
10 1
NITROGEN & ITS COMPOUNDS.
Uses of ammonia.
By the end of the lesson, the learner should be able to:
To list down uses of ammonia.
To list down nitrogenous fertilizers.
Teacher elucidates uses of ammonia and nitrogenous fertilizers.
charts
K.L.B. BK III
P. 161

Longhorn
Book III
PP 126 -226
10 2-3
NITROGEN & ITS COMPOUNDS.
Nitric acid. Lab preparation.
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 lab preparation of nitric acid.
To describe reaction of dilute nitric acid with metals.
To write equations of reactions of dilute nitric acid with metals.
Teacher demonstration.
Write equations of reaction.
Discussion.
Class experiment:- making observations and recording them in a table.
Discuss the observations.
Write down equations for the reactions.
Retort stand
Conc. H2SO4
KNO3
Chart
Schematic diagram.
Magnesium
Zinc
Copper
K.L.B. BK III
P. 163

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

Longhorn
Book III
PP 166-8
10 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
10 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
11 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
11 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
11 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
11 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
12 1
SULPHUR AND ITS COMPOUNDS
Extraction 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.
K.L.B. BK III
PP.180-181
Longhorn
Book III
PP 126-129
12 2-3
SULPHUR AND ITS COMPOUNDS
Allotropes of sulphur.
Physical properties of sulphur. Heating of sulphur.
Chemical properties of sulphur.
By the end of the lesson, the learner should be able to:
To identify allotropes of sulphur.
To describe preparation of allotropes of sulphur.
To investigate and describe chemical properties of sulphur.
Discussion and exposition of new concepts.
Group experiments.
Discuss observations.
Write corresponding equations.
video
charts
K.L.B. BK III
PP. 182-183
Longhorn Book
PP 126-129

K.L.B.BK III
PP.188-190
Longhorn
Book III
PP 256-8
12 4
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
12 5
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

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