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SCHEME OF WORK
Chemistry
Form 3 2024
TERM I
School


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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
1

School opening and planning of the term

2 1
GAS LAWS
Boyle?s law.
By the end of the lesson, the learner should be able to:


State Boyle?s law.
Explain Boyle?s law using kinetic theory of matter.
Teacher demonstration ? Use syringes / pumps to show variation of volume with pressure.
Teacher asks probing questions leading to statement of the law.
Discuss the cause of build-up-in pressure.
Chart
Volume-pressure relationship.

Syringes.
K.L.B. BK III
PP. 1-2

Longhorn Book III
PP 1 -2
2 2
GAS LAWS
Boyle?s law.
By the end of the lesson, the learner should be able to:


State Boyle?s law.
Explain Boyle?s law using kinetic theory of matter.
Teacher demonstration ? Use syringes / pumps to show variation of volume with pressure.
Teacher asks probing questions leading to statement of the law.
Discuss the cause of build-up-in pressure.
Chart
Volume-pressure relationship.

Syringes.
K.L.B. BK III
PP. 1-2

Longhorn Book III
PP 1 -2
2 3-4
GAS LAWS
Boyle?s law: - Equation and graphical representation.
By the end of the lesson, the learner should be able to:
Represent Boyle?s law mathematically and graphically.
Q/A: relation between volume and pressure mathematically and graphically.
Derive the relation P1V1=P2V2, and sketch graphs to illustrate Boyle?s law.
Worked examples.
Assignment.
chart
K.L.B. BK III
PP. 3-4

Longhorn Book III
PP 3-5
2 5
GAS LAWS
Boyle?s law: Numerical questions.
By the end of the lesson, the learner should be able to:
Solve further problems involving Boyle?s law.
Supervised exercise: Volume in cm?, m?, litres, and pressure in Pa, mmHg, cmHg, atmospheres.
Assignment.
Calculators.
K.L.B. BK III
PP. 4-5
Longhorn Book III PP 6-8
3 1
GAS LAWS
Boyle?s law: Interpretation of graphs.
By the end of the lesson, the learner should be able to:
Plot and intepret graphs involving pressure and volume of gases.
Completing tables and plotting graphs.
Interpret the plotted graphs.
Make deductions from the graphs.
Graph papers.
K.L.B.
BK III
PP. 4-5
3 2
GAS LAWS
Boyle?s law: Interpretation of graphs.
By the end of the lesson, the learner should be able to:
Plot and intepret graphs involving pressure and volume of gases.
Completing tables and plotting graphs.
Interpret the plotted graphs.
Make deductions from the graphs.
Graph papers.
K.L.B.
BK III
PP. 4-5
3 3-4
GAS LAWS
Boyle?s law: Interpretation of graphs.
By the end of the lesson, the learner should be able to:
Plot and intepret graphs involving pressure and volume of gases.
Completing tables and plotting graphs.
Interpret the plotted graphs.
Make deductions from the graphs.
Graph papers.
K.L.B.
BK III
PP. 4-5
3 5
GAS LAWS
Charles? law.
By the end of the lesson, the learner should be able to:

State Charles? law.
Explain Charles? law using kinetic theory of matter.
Teacher demonstration:- To show expansion of air when heated and contraction when pressure is constant.
Explain increase in volume when temperature is raised.
Q/A: - relation between volume and temperature, leading to Charles? law.
Coloured water,
Glass tube,
Warm water,
Cork and
Flask.
.K.L.B.
BK III P. 6

Longhorn Book III PP 9-11
4 1
GAS LAWS
Temperature in Degree Celsius and Kelvin. Equation and graphs from Charles? law.
By the end of the lesson, the learner should be able to:
Convert temperature in degree Celsius to Kelvin and vice-versa.
Teacher explains inter-conversion of the units.
Students complete a table of temperature in the two units.
student book
K.L.B.
BK III P. 10

Longhorn Book III P 11
4 2
GAS LAWS
Temperature in Degree Celsius and Kelvin. Equation and graphs from Charles? law.
By the end of the lesson, the learner should be able to:
Convert temperature in degree Celsius to Kelvin and vice-versa.
Teacher explains inter-conversion of the units.
Students complete a table of temperature in the two units.
student book
K.L.B.
BK III P. 10

Longhorn Book III P 11
4 3-4
GAS LAWS
Temperature in Degree Celsius and Kelvin. Equation and graphs from Charles? law.
By the end of the lesson, the learner should be able to:
Convert temperature in degree Celsius to Kelvin and vice-versa.
Teacher explains inter-conversion of the units.
Students complete a table of temperature in the two units.
student book
K.L.B.
BK III P. 10

Longhorn Book III P 11
4 5
GAS LAWS
Charles? law- equation and graphical representation.
By the end of the lesson, the learner should be able to:
Express Charles? law with equations.

Give a graphical representation of Charles? law.
Derive equations from volume and temperature relationship.

Exposition: - Teacher exposes a volume-temperature graph and extrapolates it to obtain the absolute temperature. The definition of absolute temperature is exposed.
student book

K.L.B. BK III
PP. 6-7

Longhorn Book III P 10
5 1
GAS LAWS
Numerical questions on Charles? Law.
By the end of the lesson, the learner should be able to:
Solve numerical problems based on Charles? Law.
Worked examples.
Supervised exercise.

Assignment.
Calculators.
K.L.B.
BK III P. 12

Longhorn Book III PP 12-14
5 2
GAS LAWS
Numerical questions on Charles? Law.
By the end of the lesson, the learner should be able to:
Solve numerical problems based on Charles? Law.
Worked examples.
Supervised exercise.

Assignment.
Calculators.
K.L.B.
BK III P. 12

Longhorn Book III PP 12-14
5 3-4
GAS LAWS
Numerical questions on Charles? Law.
Combined Gas Law.
By the end of the lesson, the learner should be able to:
Solve numerical problems based on Charles? Law.
Derive the Gas Law.
Derive the combined gas law equation.
Solve numerical problems using the equation.
Worked examples.
Supervised exercise.

Assignment.
Q/A: - Combining Boyle?s and Charles? Laws.
Worked examples.
Calculators.
K.L.B.
BK III P. 12

Longhorn Book III PP 12-14

K.L.B.
BK III P. 12

Longhorn Book III PP 14-16
5 5
GAS LAWS
Combined Gas Law.
By the end of the lesson, the learner should be able to:
Derive the Gas Law.
Derive the combined gas law equation.
Solve numerical problems using the equation.
Q/A: - Combining Boyle?s and Charles? Laws.
Worked examples.
Calculators.
K.L.B.
BK III P. 12

Longhorn Book III PP 14-16
6 1
GAS LAWS
Standard conditions, S.T.P. conditions and R.T.P. conditions.
By the end of the lesson, the learner should be able to:
State standard conditions of temperature and pressure of an ideal gas.
State room temperature and pressure of a gas.
Use standard conditions in problem solving.
Exposition of s.t.p. and r.t.p.


Problem solving.
student book

K.L.B.
BK III P. 14

6 2
GAS LAWS
Standard conditions, S.T.P. conditions and R.T.P. conditions.
By the end of the lesson, the learner should be able to:
State standard conditions of temperature and pressure of an ideal gas.
State room temperature and pressure of a gas.
Use standard conditions in problem solving.
Exposition of s.t.p. and r.t.p.


Problem solving.
student book

K.L.B.
BK III P. 14

6 3-4
GAS LAWS
Diffusion.
Rates of diffusion.
By the end of the lesson, the learner should be able to:

Define diffusion.
Describe experiments to show diffusion.

Compare rates of diffusion of ammonia gas and hydrogen chloride in air.


Group experiments.
Diffusion of KMnO4 crystals, concentrated ammonia solution.
Teacher demonstration: - To deduce rate of diffusion of ammonia gas and hydrogen chloride.
Q/A: - Students calculate ratio of rates of diffusion of the gases.


KMnO4 crystals,
Litmus papers.
student book

K.L.B. BK III
PP. 14-15

Longhorn Book III P 19

K.L.B.
BK III
PP. 18-19
Longhorn Book III 21
6 5
GAS LAWS
Rates of diffusion.
By the end of the lesson, the learner should be able to:
Compare rates of diffusion of ammonia gas and hydrogen chloride in air.
Teacher demonstration: - To deduce rate of diffusion of ammonia gas and hydrogen chloride.
Q/A: - Students calculate ratio of rates of diffusion of the gases.
student book
K.L.B.
BK III
PP. 18-19
Longhorn Book III 21
7 1
GAS LAWS
Graham?s Law.
By the end of the lesson, the learner should be able to:
Carry out numerical tasks.
Solve problems involving RMM, equal volumes of the gases involved.
Supervised practice.
Assignment.
Calculators
K.L.B. BK III
PP. 24-26

Longhorn Book III PP 22-24
7 2
GAS LAWS
Graham?s Law.
By the end of the lesson, the learner should be able to:
Carry out numerical tasks.
Solve problems involving RMM, equal volumes of the gases involved.
Supervised practice.
Assignment.
Calculators
K.L.B. BK III
PP. 24-26

Longhorn Book III PP 22-24
7 3-4
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
7 5
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
8

Midterm exams and midterm break

9 1
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
9 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
9 3-4
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
9 5
THE MOLE
Moles and Avogadro?s number.
By the end of the lesson, the learner should be able to:
Calculate number of particles in a given number of moles.
Review standard form of numbers.
Worked examples.
Supervised exercise.

Calculators.
K.L.B.BK III
PP. 3132
Longhorn
Book III
PP 30-31
10 1
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
10 2
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
10 3-4
THE MOLE
Empirical Formula.
Molecular formula.
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.
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
10 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
11 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
11 2
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
11 3-4
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.

Define molarity of a solution.
Find molarity of a solution in M/dm?
Q/A: - Equivalent ratios, e.g. 4g dissolved in 500cm? and
8g in 1 litre.
Worked examples on concentration of solutions.

Teacher explains that molarity of a solution is given in moles of the solute per litre.
Worked examples.
Supervised exercise.
chart
student book
K.L.B. BK III
PP. 46-48

Longhorn Book III PP 76-81

K.L.B. BK III
PP. 48-49

Longhorn
Book III
PP 76-81
12

Endterm exams

13

Results Analysis and school closure


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