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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

opening exam
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.
periodic table
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.
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.
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.
chart on table of the first 20 elements of the periodic table
K.L.B.
BOOK II
PP. 5-8
3 2
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.
chart on table of the first 20 elements of the periodic table
K.L.B.
BOOK II
PP. 5-8
3 3
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 4
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
4 1
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.
calculators, questions samples on papers
K.L.B. BOOK IIPP. 11-13
4 2
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.
chart on ion formation
K.L.B. BOOK IIPP 14-15
4 3
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 4
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Negative ions and ion formation.
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.
K.L.B. BOOK IIP 17
5 1
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
5 2
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 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
5 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.
table on radicals
K.L.B. BOOK IIP 18
6 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
6 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.
periodic table
K.L.B. BOOK IIP 18
6 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.
table on valencies
K.L.B. BOOK IIPP 19-20
6 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
table-valencies
K.L.B. BOOK IIPP 19-20
7 1
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Chemical formulae of compounds. -Elements of variable valencies.
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.
table-valencies
K.L.B. BOOK IIP 20
7 2
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Chemical equations.
By the end of the lesson, the learner should be able to:
To identify components of chemical equations.
Review word equations;
Exposition of new concepts with probing questions;
Brief discussion.
chart-chemical equations
K.L.B. BOOK IIPP 21-23
7 3
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.
chemical equations-chart
K.L.B. BOOK IIPP 24-25
7 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.
chemical equations-chart
K.L.B. BOOK IIPP 24-25
8 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.
chart-chemical equations
K.L.B. BOOK IIPP 25-8
8 2
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.
magnesium metal, heat, pair of tongs
K.L.B. BOOK IIP. 38
8-9

midterm exam
10 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.
Mg metal,water,trough
K.L.B. BOOK IIP. 39
10 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
10 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
10 4
CHEMICAL FAMILIES
Chemical formulae of alkaline earth metals.
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.
formula of compounds
K.L.B. BOOK II PP. 45-47
11 1
CHEMICAL FAMILIES
Uses of some alkaline earth metals and their compounds.
By the end of the lesson, the learner should be able to:
State uses of alkaline earth metals.
Descriptive approach: Teacher elucidates uses of alkaline earth metals.
samples of compounds of alkaline earth metals
K.L.B. BOOK II PP. 45-47
11 2
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
11 3
CHEMICAL FAMILIES
Chemical properties of halogens.
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.
K.L.B. BOOK IIPP. 48-50
11 4
CHEMICAL FAMILIES
Equations of reaction of halogens with metals.
By the end of the lesson, the learner should be able to:
To write balanced chemical equations of reactions involving halogens.
write chemical equations then balance them.
Supervised practice.
chemical equations
K.L.B. BOOK II P. 50
12 1
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
12 2
CHEMICAL FAMILIES
Some uses of halogens and their compounds.
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.
ICT Integration
K.L.B. BOOK II pp 52
12-14

End term exam and closing school

15 1





                            

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