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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
2 1
THE MOLE
Mole, molar mass and R.A.M.
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.
K.L.B. BK III
PP. 27-31
Longhorn
Book III
PP 34-35
2 2
THE MOLE
Number of moles in a substance.
By the end of the lesson, the learner should be able to:
Calculate number of moles in a given mass of a substance.
Worked examples.
Supervised practice.
student book
K.L.B .BK III
P. 34
Longhorn
BK III
PP 39-40
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.
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 4-5
THE MOLE
Empirical Formula.
Molecular formula.
Concentration of a solution.
By the end of the lesson, the learner should be able to:
Determine empirical formula of a compound given percentage composition by mass.

Define molecular formula of a compound.
Find molecular formula given percentage composition of a compound by mass.
Worked examples.
Supervised practice.

Assignment.
Worked examples.

Supervised practice.
student book
Calculators.
chart
K.L.B.
BK III P. 43

Longhorn Book III PP 66-71

K.L.B.BK III
P. 45

Longhorn
Book III
PP 73-75
3 1
THE MOLE
Molarity of a solution.
Preparation of 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?
Teacher explains that molarity of a solution is given in moles of the solute per litre.
Worked examples.
Supervised exercise.
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
3 2
THE MOLE
Calculators on molar solutions.
Dilution of solutions.
By the end of the lesson, the learner should be able to:
Solve numerical calculations on molar solutions.
Problems on molar solutions.
Worked examples.
Supervised exercise.
Assignment.
student book
K.L.B. BK III
P 51
Longhorn Book III PP 76-81
3 3
THE MOLE
Stoichiometry of a chemical reaction.
Stoichiometric equations.
By the end of the lesson, the learner should be able to:
To determine mole ratio of given reactions.
Group experiments: - Determine masses, hence moles of reacting CuSO4 solution and iron metal.
CuSO4 solution and iron metal.
student book
K.L.B. BK III
P. 56
Longhorn Book III PP 87-92
3 4-5
THE MOLE
Volumetric Analysis.
Stoichiometric equations of various reactions.
Apparatus used in titration experiments.
Titration process.
By the end of the lesson, the learner should be able to:
To investigate and determine Stoichiometric equations of various reactions.
To use and read a pipette and a burette.
Class experiments.

Problem solving.
Discussion and practical use of the apparatus.
Emphasis is laid on need to sterilize the apparatus after use.
student book
Pipettes
Burettes.
Indicators
Suitable acid and base.
K.L.B. BK III
P. 62
K.L.B. BK III
PP. 63-64
Longhorn
Book III
PP 104-8
4 1
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
4 2
Volumetric Analysis.
Titration experiment (Neutralization reaction)
Basicity of an acid.
By the end of the lesson, the learner should be able to:
To carry out calculations from experimental results.
Step-by-step calculations.
Calculators.
student book
K.L.B. BK III
P 66
Longhorn Book III PP 108-114
4 3
Volumetric Analysis.
Standardization of HCl.
Concentration of HCl.
By the end of the lesson, the learner should be able to:
To define standardization of HCl.
Class experiments.
Dilute HCl, Na2CO3 solutions.

K.L.B. BK III
PP. 74-75
4 4-5
Volumetric Analysis.
Redox Titration Reactions.
Water of crystallization.
Formula mass of ammonium iron (II) sulphate.
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.
student book
K.L.B. BK III
PP. 74-75

Longhorn
Book III
PP 114-115

K.L.B. BK III
P. 76
5 1
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
5 2
Volumetric Analysis.
Mass and volume of gases.
Molar gas volume.
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.
student book
K.L.B. BK III
P. 81
Longhorn BK III
PP 126-127
5 3
Volumetric Analysis.
Combining volumes of gases.
By the end of the lesson, the learner should be able to:
To compare combining volumes of two reacting gases.
Teacher demonstration: - Determining volumes of reacting gases; hence deduce volume rations.
student book
K.L.B BK III
P. 82
5 4-5
Volumetric Analysis.
ORGANIC CHEMISTRY (I)
Gay Lussac?s Law.
Hydrocarbons.
Alkanes.
Naming Alkanes.
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.
To identify various alkanes.
To list sources of alkanes.
To state uses of different fractions of crude oil.
To define cracking of alkanes.
Teacher exposes the law; and compares it with Gay Lussac?s Law.
Worked examples.
Supervised practice.
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. 85

Longhorn
Book III
PP 129-131

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

Longhorn
Book III
PP 135-6
6 1
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
6 2
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 3
ORGANIC CHEMISTRY (I)
Chemical properties of alkanes.
Substitution reactions involving alkanes. Uses 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 4-5
ORGANIC CHEMISTRY (I)
Alkenes. Molecular formulae of alkenes.
Naming alkenes.
Alkene isomerism.
Preparing ethene in the lab.
By the end of the lesson, the learner should be able to:
To write molecular formulae of alkenes.
Differentiate between branching and positional isomerism.
Examine table of members of alkenes.
To identify members of alkene series.
Discussion and drawing of molecular structures.
student book
student book
chart
K.L.B. BK III
PP 153-4
K.L.B. BK III
P. 113
Longhorn
Book III
PP 158-60
7 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
7 2
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 3
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
7 4-5
ORGANIC CHEMISTRY (I)
Isomerism in alkynes.
Physical properties of ethyne.
Chemical properties of ethyne.
Tests for alkynes. Uses of alkynes.
By the end of the lesson, the learner should be able to:
To draw structure showing positional and branching isomerism.
To describe combustion, halogenation and hydrogenation processes.
Discussion and drawing structures.
Discussion and writing of equations.
charts
K.L.B. BK III
PP. 124-125
Longhorn
Book III
PP 176-8

K.L.B. BK III
PP. 127-129
Longhorn Book III
PP 180-184
8 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
8 2
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
8 3
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 4-5
NITROGEN & ITS COMPOUNDS.
Properties and uses of Nitrogen (I) oxide.
Nitrogen (II) oxide. Lab preparation.
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 (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.
charts
Conc. 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
9

Midterm break

10 1
NITROGEN & ITS COMPOUNDS.
Properties of Nitrogen (IV) oxide.
Ammonia. Lab preparation of ammonia.
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
Ca(OH)2, NH4Cl Solutions, CaO, litmus papers..M THREE CHEMISTRY TERM TWO 20....

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

Longhorn
Book III
P 204








10 2
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
10 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
10 4-5
NITROGEN & ITS COMPOUNDS.
Ionic equations of above reactions.
Burning ammonia in the air.
Reaction of ammonia with copper (II) Oxide.
Haber process.
By the end of the lesson, the learner should be able to:
To write iIonic equations of above reactions.
To name products formed when ammonia reacts with hot CuCl2 solid.
To explain reducing properties of ammonia.
Discuss precipitation of metal hydroxides by aqueous ammonia.
Confirmatory tests for various concentrations.
Teacher demonstration and discussion.
Write down equations for the reactions.
charts
Conc. Ammonium solution
Hot platinum rod
Oxygen.
Granular CuCl2
Combustion tube,
Dry ammonia
U-tube
Gas jar.
Chart- schematic diagram.
K.L.B. BK III
P.154

Longhorn BK III
P 223


K.L.B.
BK III
P. 158
11 1
NITROGEN & ITS COMPOUNDS.
Uses of ammonia.
Nitric acid. Lab preparation.
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
Retort stand
Conc. H2SO4
KNO3
K.L.B. BK III
P. 161

Longhorn
Book III
PP 126 -226
11 2
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
11 3
NITROGEN & ITS COMPOUNDS.
Reaction of dilute Nitric acid with metals.
Nitric acid and carbonates.
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
Solutions of
Na2CO3
NaHCO3
ZnCO3
CuCO3
K.L.B. BK III
PP. 165-166

Longhorn
Book III
PP 166-8
11 4-5
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
12 1
NITROGEN & ITS COMPOUNDS.
Uses of nitric acid & nitrates.
Action of heat on 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
12 2
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 3
NITROGEN & ITS COMPOUNDS.
SULPHUR AND ITS COMPOUNDS
Nitrogen compounds and the environment.
Extraction of sulphur.
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
Chart-the Frasch process.
K.L.B.BK III
PP. 173-174

Longhorn
Book III
PP 244-6
12 4-5
SULPHUR AND ITS COMPOUNDS
Allotropes of sulphur.
Physical properties of sulphur. Heating of sulphur.
Chemical properties of sulphur.
Uses of sulphur. Sulphur dioxide.
Physical properties of sulphur dioxide.
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
charts
text book
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

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