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Chemistry
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TERM II
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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
1 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
1 2
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
1 3-4
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
R.M.M. and isotopes.
Positive ions and ion formation.
By the end of the lesson, the learner should be able to:
Calculate R.M.M. from isotopic composition.

To define an ion and a cation.
Supervised practice involving calculation of RMM from isotopic composition.

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. 11-13
K.L.B. BOOK IIPP 14-15
2 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
2 2
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
2 3-4
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.
Recall valencies of metals among the first twenty elements in the periodic table.
Teacher gives examples of stable atoms.
Guided discovery of formation of negative ions.
Diagrammatic representation of anions.

Q/A to review previous lesson;
Exposition;
Guided discovery.
Chart  ion model.
Periodic table.
K.L.B. BOOK IIP 17
3 1
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
3 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
3 3-4
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Valencies of radicals.
Oxidation number.
By the end of the lesson, the learner should be able to:
Define a radical.
Recall the valencies of common radicals.
Define oxidation number.
Predict oxidation numbers from position of elements in the periodic table.
Exposition ? teacher defines a radical, gives examples of radicals and exposes their valencies.
Students draw a table of radicals and their valencies.

Q/A: Valencies.
Expose oxidation numbers of common ions.
Students complete a table of ions and their oxidation numbers.
text book
The periodic table.
K.L.B. BOOK IIP 18
K.L.B. BOOK IIvP 18
4 1
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
4 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
4 3-4
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Chemical formulae of compounds. - Elements of equal valencies.
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 equal valencies.
To derive the formulae of some compounds involving elements of unequal valencies.
Discuss formation of compounds such as NaCl, MgO.
Discuss formation of compounds such as MgCl2
Al (NO3)3
text book
K.L.B. BOOK IIPP 19-20
5 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.
text book
K.L.B. BOOK IIP 20
5 2
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.
text book
K.L.B. BOOK IIP 20
5 3-4
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
Chemical equations.
Balanced chemical equations.
By the end of the lesson, the learner should be able to:
To identify components of chemical equations.

To balance chemical equations correctly.
Review word equations;
Exposition of new concepts with probing questions;
Brief discussion.
Exposition;
Supervised practice.
text book
K.L.B. BOOK IIPP 21-23
K.L.B. BOOK IIPP 24-25
6 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
6 2
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 3-4
CHEMICAL FAMILIES
Chemical properties of alkaline earth metals. Reaction of alkaline earth metals with oxygen.
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 oxygen

To describe reaction of alkaline earth metals with water.
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.
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.
text book
Some alkaline earth metals.
K.L.B. BOOK IIP. 38
K.L.B. BOOK IIP. 39
7 1
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
7 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
7 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
7 3-4
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
8

MIDTERM BREAK
9 1
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.
text book
K.L.B. BOOK II PP. 45-47
9 2
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.
text book
K.L.B. BOOK II PP. 45-47
9 3-4
CHEMICAL FAMILIES
Halogens. Physical properties of halogens.
Comparative physical properties of halogens.
Chemical 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.

To state and explain the trends in physical properties of halogens.
Teacher demonstration: - To examine electrical properties of iodine, solubility in water of chlorine.
Examine a comparative table of physical properties of halogens.
Discuss the deductions made from the table.
Iodine crystals, electrical wire, a bulb.
text book
Chlorine, iron wool, bromine.
KLB BK II
P. 47
K.L.B. BOOK II P. 47
10 1
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.
Re-write word equations as chemical equations then balance them.
Supervised practice.
text book
K.L.B. BOOK II P. 50
10 2
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.
Re-write word equations as chemical equations then balance them.
Supervised practice.
text book
K.L.B. BOOK II P. 50
10 3-4
CHEMICAL FAMILIES
Reaction of halogens with water.
Some uses of halogens and their compounds.
By the end of the lesson, the learner should be able to:
To describe reaction of halogens with water and the results obtained.
To state uses of halogens and their compounds.
Bubbling chlorine gas through water.
Carry out litmus test for the water.
Explain the observations.

Teacher elucidates uses of halogens and their compounds.
Chlorine gas, litmus papers.
text book
K.L.B. BOOK II P. 51
K.L.B. BOOK II pp 52
11 1
CHEMICAL FAMILIES
Noble Gases. Comparative physical properties of noble gases.
Uses of noble gases.
By the end of the lesson, the learner should be able to:
To describe physical properties of noble gases.
To explain physical properties of noble gases.
Make A comparative analysis of tabulated physical properties of noble gases.
text book
  K.L.B. BOOK IIPP. 52-53
11 2
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.
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.
text book
Chart- dot and cross diagrams.
Models for bonding.
K.L.B. BOOK IIP54




PP 57-58
11 3-4
STRUCTURE & BONDING
Grant ionic structures.
Physical properties of ionic compounds.
Covalent bond.
By the end of the lesson, the learner should be able to:
Describe the crystalline ionic compound.
Give examples of ionic substances.
Explain the formation of covalent bond
Use dot and cross diagrams to represent covalent bond.
Discuss the group ionic structures of NaCl.
Teacher gives examples of other ionic substances: KNO3, potassium bromide, Ca (NO3)2, sodium iodide.
Exposition: Shared pair of electrons in a hydrogen molecule, H2O, NH3, Cl2, and CO2.
Drawing of dot-and-cross diagrams of covalent bonds.
Giant sodium chloride model.
text book
K.L.B. BOOK II PP 56-58
K.L.B. BOOK II PP 60-63
12 1
STRUCTURE & BONDING
Co-ordinate bond.
Molecular structure.
By the end of the lesson, the learner should be able to:
To describe the co-ordinate bond
To represent co-ordinate bond diagrammatically.
Exposition- teacher explains the nature of co-ordinate bond.
Students represent co-ordinate bond diagrammatically.
text book
K.L.B. BOOK II P 65
12 2
STRUCTURE & BONDING
Trend in physical properties of molecular structures.
Giant atomic structure in diamond.
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 3-4
STRUCTURE & BONDING
Giant atomic structure in graphite.
Metallic bond. Uses of some metals.
By the end of the lesson, the learner should be able to:
To describe giant atomic structure in graphite.
To state uses of graphite.
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.
Diagrammatic representation of graphite.

Discuss uses of graphite.
Discussion:
Detailed analysis of comparative physical properties of metals and their uses.



Probing questions & brief explanations.
Diagrams in textbooks.
text book
K.L.B. BOOK II pp 69
K.L.B. BOOK IIP 70
13 1
PROPERTIES AND TRENDS ACROSS PERIOD THREE
Physical properties of elements in periods.
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
13 2
PROPERTIES AND TRENDS ACROSS PERIOD THREE
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 other physical properties of elements across period 3.
Analyse comparative physical properties presented in form of a table.
Explain the trend in the physical properties given.
The periodic table.
K.L.B. BOOK II P. 77
13 3-4
PROPERTIES AND TRENDS ACROSS PERIOD THREE
Chemical properties of elements in the third period.
Oxides of period 3 elements.
Chlorides 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
To explain chemical behavior of their chlorides.
To describe hydrolysis reaction.
Q/A: Review reaction of sodium, Mg, chlorine, with water.
Infer that sodium is most reactive metal; non-metals do not react with water.

Comparative analysis, discussion and explanation.
The periodic table.
K.L.B. BOOK II PP. 80-81
K.L.B. BOOK II PP. 77-78

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