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SCHEME OF WORK
Chemistry
Form 4 2025
TERM I
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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
2 1
METALS
Ores of some metals.
Occurrence and extraction of sodium.
By the end of the lesson, the learner should be able to:


Name the chief ores of some metals.


Exposition and brief discussion.
Chart: Down?s cell.
K.L.B. BK IV
Pages 168-9
2 2
METALS
Occurrence and extraction of aluminium.
By the end of the lesson, the learner should be able to:
Describe occurrence and extraction of aluminium.
Brief discussion.
Write relevant chemical equations.
student book
K.L.B. BK IV
Pages 171-3
2 3
METALS
Occurrence and extraction of iron.
By the end of the lesson, the learner should be able to:
Describe occurrence and extraction of iron.
Brief discussion.
Write relevant chemical equations.
Chart: Blast furnace.
K.L.B. BK IV
Pages 173-5
2 4
METALS
Occurrence and extraction of zinc.
Extraction of lead.
By the end of the lesson, the learner should be able to:
Describe occurrence and extraction of zinc by electrolysis and reduction methods.
Brief discussion.
Write relevant chemical equations.
Flow chart: extraction of Zinc.
Flow chart: extraction of lead.
K.L.B. BK IV
Pages 175-9
2 5
METALS
Occurrence and extraction of copper.
By the end of the lesson, the learner should be able to:
Describe extraction of copper.
Q/A & brief discussion.
Write balanced chemical equations leading to extraction of copper.
Flow chart: extraction of copper.
K.L.B. BK IV
Pages 181-183
3 1
METALS
Physical properties of some metals.
Uses of metals.
By the end of the lesson, the learner should be able to:
State general properties of metals.
Explain the difference in physical properties of metals.
Compare physical properties of some metals as summarized in a chart.
Q/A & discussion based on physical properties.
student book
K.L.B. BK IV
Pages 183-4
3 2
METALS
Environmental effects of extraction of metals.
By the end of the lesson, the learner should be able to:
Identify some environmental effects of extraction of metals.
Oral questions and open discussion.

Assignment / Topic review.
student book
K.L.B. BK IV
Pages 197-8
3 3
RADIOACTIVITY
Definition of radioactivity.
Alpha particles.
By the end of the lesson, the learner should be able to:


Define radioactivity, a nuclide and radioactive decay.
Differentiate between natural and artificial radioactivity.


Q/A: Review the atomic structure.
Exposition: symbolic representation of an atom / nucleus.
Exposition: meaning of radioactivity and radioactive decay.
Discussion: artificial and natural radioactivity.

student book
K.L.B. BK IV
Pages 249-251
3 4
RADIOACTIVITY
Equations involving alpha particles.
Beta particles. Gamma rays.
Radioactive Half-Life.
By the end of the lesson, the learner should be able to:
Write down and balance equations involving alpha particles.
Q/A: Review atomic and mass numbers.
Examples of balanced equations.
Supervised practice.
student book
Dice.
K.L.B. BK IV
Page 257
3 5
RADIOACTIVITY
Radioactive decay curve.
Nuclear fusion and nuclear fission. Applications of radioactivity.
By the end of the lesson, the learner should be able to:
Plot a radioactive decay curve to deduce the
half ?life from the curve.
Drawing a radioactive decay curve inferring the half-life of the sample from the graph.
Graph papers.
student book
K.L.B. BK IV
Pages 254-5

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