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Chemistry
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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
2 1
CHEMICAL FAMILIES
Alkaline Earth metals Atomic and ionic radii 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.
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.
Some alkaline earth metals.
K.L.B. BOOK II pp 34
2 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
2 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
3 1
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
3 2-3
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
3 4
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
4 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
4 2-3
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
4 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.
text book
K.L.B. BOOK II PP. 45-47
5 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.
text book
K.L.B. BOOK II PP. 45-47
5 2-3
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.

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
KLB BK II
P. 47
K.L.B. BOOK II P. 47
5 4
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
6 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
6 2-3
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
6 4
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.
text book
K.L.B. BOOK II pp 52
7 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
7 2-3
STRUCTURE & BONDING
Chemical bonds. Ionic bond.
Ionic bond representation.
Grant ionic structures.
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.
Describe the crystalline ionic compound.
Give examples of ionic substances.
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.

Discuss the group ionic structures of NaCl.
Teacher gives examples of other ionic substances: KNO3, potassium bromide, Ca (NO3)2, sodium iodide.
text book
Chart- dot and cross diagrams.
Models for bonding.
Giant sodium chloride model.
K.L.B. BOOK IIP54




PP 57-58
K.L.B. BOOK II PP 56-58
7 4
STRUCTURE & BONDING
Physical properties of ionic compounds.
Covalent bond.
By the end of the lesson, the learner should be able to:
Describe physical properties of ionic compounds.
Explain the differences in the physical properties of ionic compounds.
Analyse tabulated comparative physical properties of ionic compounds.

Teacher asks probing questions.
text book
K.L.B. BOOK IIPP 58-59
8 1
STRUCTURE & BONDING
Co-ordinate bond.
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
8 2-3
STRUCTURE & BONDING
Molecular structure.
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 the molecular structure.
To give examples of substance exhibiting molecular structure
To describe giant atomic structure in diamond.
To state uses of diamond.
Discussion ? To explain formation of the giant structure and give examples of substance exhibiting molecular structure.
Diagrammatic representation of diamond.
Discuss uses of diamond.
text book
Sugar, naphthalene, iodine rhombic sulphur.
Diagrams in textbooks.
K.L.B. BOOK IIP 65
K.L.B. BOOK II P 69
8 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.
Diagrammatic representation of graphite.

Discuss uses of graphite.
Diagrams in textbooks.
text book
K.L.B. BOOK II pp 69
9 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
9-10

Half Term
10 2-3
PROPERTIES AND TRENDS ACROSS PERIOD THREE
Physical 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
10 4
PROPERTIES AND TRENDS ACROSS PERIOD THREE
Chemical properties of elements in period 3.
By the end of the lesson, the learner should be able to:
To compare reactions of elements in period 3 with oxygen.
Q/A: Products of reactions of Na, Mg, Al, P, & S with oxygen.
Discuss the trend in their reactivity; identify basic and acidic oxides.
Exercise ? balanced chemical equations for the above reactions.
The periodic table.
K.L.B. BOOK II PP. 79-80
11 1
PROPERTIES AND TRENDS ACROSS PERIOD THREE
Chemical properties of elements in the third period.
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
11 2-3
PROPERTIES AND TRENDS ACROSS PERIOD THREE
SALTS
Oxides of period 3 elements.
Chlorides of period 3 elements.
Types of salts.
By the end of the lesson, the learner should be able to:
To identify bonds across elements in period 3.
To explain chemical behavior of their oxide.
Define a salt.
Describe various types of salts and give several examples in each case.
Comparative analysis, discussion and explanation.
Descriptive approach. Teacher exposes new concepts.
The periodic table.
text book
K.L.B. BOOK II P. 84
K.L.B. BOOK II P. 91
11 4
SALTS
Solubility of salts in water.
By the end of the lesson, the learner should be able to:
To test solubility of various salts in cold water/warm water.
Class experiments- Dissolve salts in 5 cc of water.
Record the solubility in a table,
Analyse the results.
Sulphates, chlorides, nitrates, carbonates of various metals.
K.L.B. BOOK II PP. 92-93
12 1
SALTS
Solubility of bases in water.
By the end of the lesson, the learner should be able to:
To test solubility of various bases in water.
To carry out litmus test on the resulting solutions.
Class experiments- Dissolve salts in 5cc of water.
Record the solubility in a table,
Carry out litmus tests.
Discuss the results.
Oxides, hydroxides, of various metals, litmus papers.
K.L.B. BOOK IIPP. 94-95
12 2-3
SALTS
Methods of preparing various salts.
By the end of the lesson, the learner should be able to:
To describe various methods of preparing some salts.
Experimental and descriptive treatments of preparation of salts e.g. ZnSO4, CuSO4, NaCl and Pb(NO3)2.

CuO, H2SO4, HCl, NaOH, PbCO3, dil HNO3.
K.L.B. BOOK II pp96
12 4
SALTS
Direct synthesis of a salts.
By the end of the lesson, the learner should be able to:
To describe direct synthesis of a salt.
To write balanced equations for the reactions.
Group experiments- preparation of iron (II) sulphide by direct synthesis.
Give other examples of salts prepared by direct synthesis.
Students write down corresponding balanced equations.
Iron,
Sulphur
K.L.B. BOOK II P. 104
13 1
SALTS
Ionic equations.
Effects of heat on carbonates.
By the end of the lesson, the learner should be able to:
To identify spectator ions in double decomposition reactions.
To write ionic equations correctly.
Q/A: Ions present in given reactants.
Deduce the products of double decomposition reactions.
Give examples of equations.
Supervised practice.
PbNO3, MgSO4 solutions.
Various carbonates.
K.L.B. BOOK II
13 2-3
SALTS
Effects of heat on nitrates.
Effects of heat on sulphates.
Hygroscopy, Deliquescence and Efflorescence.
By the end of the lesson, the learner should be able to:
To state effects of heat on nitrates.
To predict products resulting from heating metal nitrates.
To state effects of heat on sulphates.
To predict products results from heating metal sulphates.
Group experiments- To investigate effects of heat on various metal nitrates.
Observe various colour changes before, during and after heating.
Write equations for the reactions.

Group experiments- To investigate effects of heat on various sulphates.
Observe various colour changes before, during and after heating.
Write equations for the reactions.
Common metal nitrates.
Common sulphates.
K.L.B. BOOK II PP. 110-111
K.L.B. BOOK II P. 113
13 4
SALTS
Uses of salts.
By the end of the lesson, the learner should be able to:
To state uses of salts
Teacher elucidates uses of salts.
K.L.B. BOOK II P. 114

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