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SCHEME OF WORK
Chemistry
Form 2 2025
TERM I
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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
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 2-3
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
First twenty elements of the periodic table.
Isotopes.
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.
Define isotopes.
Give examples of isotopes.
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.

Exposition of definition and examples of isotopes.
Giving examples of isotopes.
Periodic table.
Periodic table.
K.L.B.
BOOK II

PP. 1-3
K.L.B.
BOOK II
P. 4





PP. 5-8
2 4
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Isotopes.
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 5
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Electronic configuration.
By the end of the lesson, the learner should be able to:
Represent isotopes symbolically.
Define an energy level.
Describe electronic configuration in an atom.
Exposition ? teacher exposes new concepts about electronic configuration.
Written exercise.
Periodic table.
K.L.B.
BOOK II
P. 4





PP. 5-9
3 1
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 2-3
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Periods of 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 period.
Q/A: Examples of 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 4
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 5
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 2-3
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Positive ions representation.
Negative ions and ion formation.
By the end of the lesson, the learner should be able to:
To represent formation of positive ions symbolically.
To define an anion.
To describe formation of negative ions symbolically.
Diagrammatic representation of cations.
Teacher gives examples of stable atoms.
Guided discovery of formation of negative ions.
Diagrammatic representation of anions.
Chart  ion model.
K.L.B. BOOK IIP 16
K.L.B. BOOK IIP 17
4 4
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Valencies of metals.
By the end of the lesson, the learner should be able to:
Recall valencies of 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 5
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
5 1
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 2-3
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 4
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 5
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
6 1
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 2-3
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.
To identify components of chemical equations.
Discuss formation of compounds such as
-Copper (I) Oxide.
-Copper (II) Oxide.
-Iron (II) Sulphate.
-Iron (III) Sulphate.

Review word equations;
Exposition of new concepts with probing questions;
Brief discussion.
text book
K.L.B. BOOK IIP 20
K.L.B. BOOK IIPP 21-23
6 4
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 5
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
7 1
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
7 2-3
CHEMICAL FAMILIES
Alkali metals. Atomic and ionic radii of alkali metals
Ionisation energy of alkali metals.
By the end of the lesson, the learner should be able to:





Identify alkali metals.
State changes in atomic and ionic radii of alkali metals.

State changes in number of energy levels and ionisation energy of alkali metals.

Q/A to reviews elements of group I and their electronic configuration.
Examine a table of elements, their symbols and atomic & ionic radii.
Discussion & making deductions from the table.
Examine a table of elements, number of energy levels and their ionization energy.
Discuss the trend deduced from the table.
The periodic
text book
K.L.B. BOOK IIPP 28-29
7-8

Mid term break

9 1
CHEMICAL FAMILIES
Physical properties of alkali metals.
By the end of the lesson, the learner should be able to:
State and explain trends in physical properties of alkali metals.
Examine a table showing comparative physical properties of Li, Na, and K.
Q/A: Teacher asks probing questions as students refer to the table for answers.
Detailed discussion on physical properties of alkali metals.
Chart ? comparative properties of Li, Na, K.
K.L.B. BOOK IIPP 30-31
9 2-3
CHEMICAL FAMILIES
Chemical properties of alkali metals.
By the end of the lesson, the learner should be able to:
To describe reaction of alkali metals with water.
Q/A: Review reaction of metals with water.
Writing down chemical equations for the reactions.
Deduce and discuss the order of reactivity down the group.
text book
K.L.B. BOOK IIP. 32
9 4
CHEMICAL FAMILIES
Reaction of alkali metals with chlorine gas.
By the end of the lesson, the learner should be able to:
To write balanced equations for reaction of alkali 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.
Sodium, chlorine.
K.L.B. BOOK IIP. 33
9 5
CHEMICAL FAMILIES
Compounds of alkali metals.
By the end of the lesson, the learner should be able to:
Write chemical formulae for compounds of alkali metals.
Explain formation of hydroxides, oxides and chlorides of alkali metals.
Exercise: Completing a table of hydroxides, oxides and chlorides of alkali metals.
Discuss combination of ions of alkali metals with anions.
text book
K.L.B. BOOK II pp 33
10 1
CHEMICAL FAMILIES
Uses of alkali metals.
By the end of the lesson, the learner should be able to:
State uses of alkali metals.
Descriptive approach: Teacher elucidates uses of alkali metals.
text book
K.L.B. BOOK II pp 34
10 2-3
CHEMICAL FAMILIES
Alkaline Earth metals Atomic and ionic radii of alkaline earth metals.
Physical properties of alkaline earth metals.
By the end of the lesson, the learner should be able to:
Identify alkaline earth metals.

State changes in atomic and ionic radii of alkaline earth metals.
State and explain trends in physical properties of alkaline earth metals.
Q/A: Elements of group I and their electron configuration.
Examine a table of elements, their symbols and atomic & ionic radii.
Make deductions from the table.

Examine a table showing comparative physical properties of Be, Mg, Ca.
Q/A: Teacher asks probing questions as students refer to the table for answers.
Detailed discussion of physical properties of alkaline earth metals.
Some alkaline earth metals.
K.L.B. BOOK II pp 34
K.L.B. BOOK II P. 35
10 4
CHEMICAL FAMILIES
Electrical properties of alkaline earth metals.
By the end of the lesson, the learner should be able to:
To describe electrical properties of alkaline earth metals.
Teacher demonstration: -
To show alkaline metals are good conductors of electric charge.
Alkaline earth metals.
K.L.B. BOOK IIP. 37
10 5
STRUCTURE & BONDING
Chemical bonds. Ionic bond.
Ionic bond representation.
By the end of the lesson, the learner should be able to:
Describe role of valence electrons in determining chemical bonding.
Explain formation of ionic bonding.
Use dot and cross diagrams to represent ionic bonding.
Q/A: Review valence electrons of atoms of elements in groups I, II, III, VII and VIII.
Q/A: Review group I and group VII elements.
Discuss formation of ionic bond.
Drawing diagrams of ionic bonds.
text book
Chart- dot and cross diagrams.
Models for bonding.
K.L.B. BOOK IIP54




PP 57-58
11 1
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.
Describe physical properties of ionic compounds.
Explain the differences in the physical properties of ionic compounds.
Discuss the group ionic structures of NaCl.
Teacher gives examples of other ionic substances: KNO3, potassium bromide, Ca (NO3)2, sodium iodide.
Analyse tabulated comparative physical properties of ionic compounds.
Teacher asks probing questions.
Giant sodium chloride model.
text book
K.L.B. BOOK II PP 56-58
11 2-3
STRUCTURE & BONDING
Covalent bond.
Co-ordinate bond.
Molecular structure.
Trend in physical properties of molecular structures.
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.
To describe the co-ordinate bond
To represent co-ordinate bond diagrammatically.
To describe the molecular structure.
To give examples of substance exhibiting molecular structure
To describe van- der -waals forces.
To explain the trend in physical properties of molecular structures.
Exposition: Shared pair of electrons in a hydrogen molecule, H2O, NH3, Cl2, and CO2.
Drawing of dot-and-cross diagrams of covalent bonds.
Exposition- teacher explains the nature of co-ordinate bond.
Students represent co-ordinate bond diagrammatically.
Discussion ? To explain formation of the giant structure and give examples of substance exhibiting molecular structure.
Discuss comparative physical properties of substances. exhibiting molecular structure.
Explain variation in the physical properties.
text book
text book
Sugar, naphthalene, iodine rhombic sulphur.
K.L.B. BOOK II PP 60-63
K.L.B. BOOK IIP 65
11 4
STRUCTURE & BONDING
Giant atomic structure in diamond.
Giant atomic structure in graphite.
By the end of the lesson, the learner should be able to:
To describe giant atomic structure in diamond.
To state uses of diamond.
To describe giant atomic structure in graphite.
To state uses of graphite.
Diagrammatic representation of diamond.
Discuss uses of diamond.
Diagrammatic representation of graphite.
Discuss uses of graphite.
Diagrams in textbooks.
K.L.B. BOOK II P 69
11 5
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
12-13

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