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SCHEME OF WORK
Chemistry
Form 2 2025
TERM II
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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
1

REPORTING AND REVISION OF END TERM 1 EXAMS
2 1
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Atomic and mass numbers.
By the end of the lesson, the learner should be able to:


Name the subatomic particles in an atom.
Define atomic number and mass number of an atom.
Represent atomic and mass numbers symbolically.
Exposition on new concepts;
Probing questions;
Brief discussion.
text book
K.L.B.
BOOK II

PP. 1-3
2 2
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
First twenty elements of the periodic table.
By the end of the lesson, the learner should be able to:
List the first twenty elements of the periodic table.
Write chemical symbols of the first twenty elements of the periodic table.
Expository approach: referring to the periodic table, teacher exposes the first twenty elements.
Writing down a list of first twenty elements of the periodic table.
Periodic table.
K.L.B.
BOOK II

PP. 1-3
2 3
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Isotopes.
Electronic configuration.
By the end of the lesson, the learner should be able to:
Define isotopes.
Give examples of isotopes.
Exposition of definition and examples of isotopes.
Giving examples of isotopes.
Periodic table.
K.L.B.
BOOK II
P. 4





PP. 5-8
2 4
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Electronic configuration in diagrams.
By the end of the lesson, the learner should be able to:
Represent electronic configuration diagrammatically.
Supervised practice;
Written exercise.
text book
K.L.B.
BOOK II
PP. 5-8
3 1
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Periods of the periodic table.
By the end of the lesson, the learner should be able to:
Identify elements of the same period.
Exposition ? Definition of a period.
Q/A: Examples of elements of the same period.
Periodic table.
K.L.B. BOOK IIP. 9
3 2
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Groups of the periodic table.
By the end of the lesson, the learner should be able to:
Identify elements of the same period.
Exposition ? definition of a group.
Q/A: examples of elements of the same group.
Periodic table.
K.L.B. BOOK IIP. 9
3 3
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
R.M.M. and isotopes.
By the end of the lesson, the learner should be able to:
Calculate R.M.M. from isotopic composition.
Supervised practice involving calculation of RMM from isotopic composition.
text book
K.L.B. BOOK IIPP. 11-13
3 4
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Positive ions and ion formation.
By the end of the lesson, the learner should be able to:
To define an ion and a cation.
Teacher gives examples of stable atoms.
Guided discovery that metals need to lose one, two or three electrons to attain stability.
Examples of positive ions.
text book
K.L.B. BOOK IIPP 14-15
4 1
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Positive ions representation.
By the end of the lesson, the learner should be able to:
To represent formation of positive ions symbolically.
Diagrammatic representation of cations.
Chart  ion model.
K.L.B. BOOK IIP 16
4 2
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Negative ions and ion formation.
Valencies of metals.
By the end of the lesson, the learner should be able to:
To define an anion.
To describe formation of negative ions symbolically.
Teacher gives examples of stable atoms.
Guided discovery of formation of negative ions.
Diagrammatic representation of anions.
Chart  ion model.
Periodic table.
K.L.B. BOOK IIP 17
4 3
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Valencie of non-metals.
By the end of the lesson, the learner should be able to:
Recall valencies of non-metals among the first twenty elements in the periodic table.
Q/A to review previous lesson;
Exposition;
Guided discovery.
Periodic table.
K.L.B. BOOK IIP 17
4 4
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Valencies of radicals.
By the end of the lesson, the learner should be able to:
Define a radical.
Recall the valencies of common radicals.
Exposition ? teacher defines a radical, gives examples of radicals and exposes their valencies.
Students draw a table of radicals and their valencies.
text book
K.L.B. BOOK IIP 18
5 1
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Oxidation number.
By the end of the lesson, the learner should be able to:
Define oxidation number.
Predict oxidation numbers from position of elements in the periodic table.
Q/A: Valencies.
Expose oxidation numbers of common ions.
Students complete a table of ions and their oxidation numbers.
The periodic table.
K.L.B. BOOK IIvP 18
5 2
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Electronic configuration, ion formed, valency and oxidation number
By the end of the lesson, the learner should be able to:
Relate electronic configuration, ion formed, valency and oxidation number of different elements.
Written exercise;
Exercise review.
text book
K.L.B. BOOK IIP 18
5 3
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Chemical formulae of compounds. - Elements of equal valencies.
By the end of the lesson, the learner should be able to:
To derive the formulae of some compounds involving elements of equal valencies.
Discuss formation of compounds such as NaCl, MgO.
text book
K.L.B. BOOK IIPP 19-20
5 4
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Chemical formulae of compounds. -Elements of unequal valencies.
By the end of the lesson, the learner should be able to:
To derive the formulae of some compounds involving elements of unequal valencies.
Discuss formation of compounds such as MgCl2
Al (NO3)3
text book
K.L.B. BOOK IIPP 19-20
6 1
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Chemical formulae of compounds. -Elements of variable valencies.
Chemical equations.
By the end of the lesson, the learner should be able to:
To derive the formulae of some compounds involving elements of variable valencies.
Discuss formation of compounds such as
-Copper (I) Oxide.
-Copper (II) Oxide.
-Iron (II) Sulphate.
-Iron (III) Sulphate.
text book
K.L.B. BOOK IIP 20
6 2
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Balanced chemical equations.
By the end of the lesson, the learner should be able to:
To balance chemical equations correctly.
Exposition;
Supervised practice.
text book
K.L.B. BOOK IIPP 24-25
6 3
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Balanced chemical equations.(contd)
By the end of the lesson, the learner should be able to:
To balance chemical equations correctly.
Supervised practice;
Written exercise.
text book
K.L.B. BOOK IIPP 25-8
6 4
CHEMICAL FAMILIES
Chemical properties of alkaline earth metals. Reaction of alkaline earth metals with oxygen.
By the end of the lesson, the learner should be able to:
To describe reaction of alkaline earth metals with oxygen
Q/A: Review reactions of Mg, Ca, with oxygen.
The corresponding word and then chemical equations are then written and their correctness verified by the teacher.
text book
K.L.B. BOOK IIP. 38
7

MID-TERM EXAMS
8

MID TERM BREAK
9 1
CHEMICAL FAMILIES
Chemical properties of alkaline earth metals. Reaction of alkaline earth metals with water.
By the end of the lesson, the learner should be able to:
To describe reaction of alkaline earth metals with water.
Q/A: Review reaction of metals with water.
Writing down word and balanced chemical equations for the reactions.
Deduce and discuss the order of reactivity down the group.
Some alkaline earth metals.
K.L.B. BOOK IIP. 39
9 2
CHEMICAL FAMILIES
Reaction of alkaline earth metals with chlorine gas.
By the end of the lesson, the learner should be able to:
To write balanced equations for reaction of alkaline earth metals with chlorine gas.
Teacher demonstration- Reaction of sodium with chlorine in a fume chamber.
Q/A: Students to predict a similar reaction between potassium and chlorine.
Word and balanced chemical equations for various reactions.
Supervised practice.
Sodium, chlorine.
K.L.B. BOOK II P. 41
9 3
CHEMICAL FAMILIES
Reaction of alkaline earth metals with dilute acids.
By the end of the lesson, the learner should be able to:
To write balanced equations for reactions of alkaline earth metals with dilute acids.
Changing word to chemical equations.
Supervised practice.
revision book
K.L.B. BOOK II PP. 43
9 4
CHEMICAL FAMILIES
Chemical formulae of alkaline earth metals.
Uses of some alkaline earth metals and their compounds.
By the end of the lesson, the learner should be able to:
Write chemical formulae for compounds of alkaline earth metals.
Explain formation of hydroxides, oxides and chlorides of alkaline earth metals.
Exercise: Completing a table of hydroxides, oxides and chlorides of alkaline earth metals.
Discuss combination of ions of alkaline earth metals with anions.
text book
K.L.B. BOOK II PP. 45-47
10 1
CHEMICAL FAMILIES
Halogens. Physical properties of halogens.
Comparative physical properties of halogens.
By the end of the lesson, the learner should be able to:
Identify halogens in the periodic table.
Give examples of halogens.
Identify physical states of halogens.
Teacher demonstration: - To examine electrical properties of iodine, solubility in water of chlorine.
Iodine crystals, electrical wire, a bulb.
text book
KLB BK II
P. 47
10 2
CHEMICAL FAMILIES
Chemical properties of halogens.
Equations of reaction of halogens with metals.
By the end of the lesson, the learner should be able to:
To describe laboratory preparation of chlorine gas.

To describe reaction of halogens with metals.
Teacher demonstration: - preparation of chlorine gas.
Reaction of chlorine and iron wool.
Reaction of bromine and iron wool.
Reaction of iodine and iron wool.
Observe the rate of these reactions; hence deduce order of their reactivity of halogens.
Chlorine, iron wool, bromine.
text book
K.L.B. BOOK IIPP. 48-50
10 3
CHEMICAL FAMILIES
Reaction of halogens with water.
By the end of the lesson, the learner should be able to:
To describe reaction of halogens with water and the results obtained.
Bubbling chlorine gas through water.
Carry out litmus test for the water.
Explain the observations.
Chlorine gas, litmus papers.
K.L.B. BOOK II P. 51
10 4
CHEMICAL FAMILIES
Some uses of halogens and their compounds.
Noble Gases. Comparative physical properties of noble gases.
By the end of the lesson, the learner should be able to:
To state uses of halogens and their compounds.
Teacher elucidates uses of halogens and their compounds.
text book
K.L.B. BOOK II pp 52
11 1
CHEMICAL FAMILIES
STRUCTURE & BONDING
STRUCTURE & BONDING
Uses of noble gases.
Chemical bonds. Ionic bond.
Ionic bond representation.
By the end of the lesson, the learner should be able to:
State uses of noble gases.
Teacher elucidates uses of noble gases.
text book
Chart- dot and cross diagrams.
Models for bonding.
K.L.B. BOOK IIP. 54
11 2
STRUCTURE & BONDING
Grant ionic structures.
Physical properties of ionic compounds.
By the end of the lesson, the learner should be able to:
Describe the crystalline ionic compound.
Give examples of ionic substances.
Discuss the group ionic structures of NaCl.
Teacher gives examples of other ionic substances: KNO3, potassium bromide, Ca (NO3)2, sodium iodide.
Giant sodium chloride model.
text book
K.L.B. BOOK II PP 56-58
11 3
STRUCTURE & BONDING
Covalent bond.
Co-ordinate bond.
Molecular structure.
By the end of the lesson, the learner should be able to:
Explain the formation of covalent bond
Use dot and cross diagrams to represent covalent bond.
Exposition: Shared pair of electrons in a hydrogen molecule, H2O, NH3, Cl2, and CO2.
Drawing of dot-and-cross diagrams of covalent bonds.
text book
K.L.B. BOOK II PP 60-63
11 4
STRUCTURE & BONDING
Trend in physical properties of molecular structures.
Giant atomic structure in diamond.
Giant atomic structure in graphite.
By the end of the lesson, the learner should be able to:
To describe van- der -waals forces.
To explain the trend in physical properties of molecular structures.
Discuss comparative physical properties of substances. exhibiting molecular structure.
Explain variation in the physical properties.
Sugar, naphthalene, iodine rhombic sulphur.
Diagrams in textbooks.
K.L.B. BOOK IIP 65
12 1
STRUCTURE & BONDING
Metallic bond. Uses of some metals.
By the end of the lesson, the learner should be able to:
To describe mutual electronic forces between electrons and nuclei.
To describe metallic bond.
To compare physical properties of metals.
To state uses of some metals.
Discussion:
Detailed analysis of comparative physical properties of metals and their uses.



Probing questions & brief explanations.
text book
K.L.B. BOOK IIP 70
12 2
PROPERTIES AND TRENDS ACROSS PERIOD THREE
Physical properties of elements in periods.
Physical properties of elements in period 3.
Chemical properties of elements in period 3.
By the end of the lesson, the learner should be able to:




To compare electrical conductivity of elements in period 3
Group experiments- Construct electrical circuits incorporating a magnesium ribbon, then aluminum foil, then sulphur in turns.
The brightness of the bulb is noted in each case.
Discuss the observations in terms of delocalised electrons.
The periodic table.
K.L.B. BOOK IIP. 76
12 3
PROPERTIES AND TRENDS ACROSS PERIOD THREE
Chemical properties of elements in the third period.
Oxides of period 3 elements.
By the end of the lesson, the learner should be able to:
To compare reactions of elements in period 3 with water
Q/A: Review reaction of sodium, Mg, chlorine, with water.
Infer that sodium is most reactive metal; non-metals do not react with water.
The periodic table.
K.L.B. BOOK II PP. 80-81
12 4
PROPERTIES AND TRENDS ACROSS PERIOD THREE
EFFECTS OF AN ELECTRIC CURRENT ON SUBSTANCES.
Chlorides of period 3 elements.
Electrical conductivity.
By the end of the lesson, the learner should be able to:
To explain chemical behavior of their chlorides.
To describe hydrolysis reaction.
Comparative analysis, discussion and explanation.
The periodic table.
Various solids, bulb, battery, & wires.
K.L.B. BOOK II PP. 77-78
13

END TERM EXAMS
14

MARKING AND CLOSING OF THE SCHOOL

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