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Chemistry
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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
1

Opening an revision of end term 1 exam
2 1
CHEMICAL FAMILIES
Halogens. 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.
KLB BK II
P. 47
2 2
CHEMICAL FAMILIES
Comparative physical properties of halogens.
By the end of the lesson, the learner should be able to:
To state and explain the trends in physical properties of halogens.
Examine a comparative table of physical properties of halogens.
Discuss the deductions made from the table.
text book
K.L.B. BOOK II P. 47
2 3-4
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.
To write balanced chemical equations of reactions involving halogens.
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.

Re-write word equations as chemical equations then balance them.
Supervised practice.
Chlorine, iron wool, bromine.
text book
K.L.B. BOOK IIPP. 48-50
K.L.B. BOOK II P. 50
2 5
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
3 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
3 2
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
3 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
3 5
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
4 1
CHEMICAL FAMILIES
Noble Gases. Comparative physical properties 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
4 2
CHEMICAL FAMILIES
Uses of noble gases.
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
K.L.B. BOOK IIP. 54
4 3-4
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
K.L.B. BOOK II P. 58
4 5
STRUCTURE & BONDING
Grant ionic structures.
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.
K.L.B. BOOK II PP 56-58
5 1
STRUCTURE & BONDING
Physical properties of ionic compounds.
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
5 2
STRUCTURE & BONDING
Covalent bond.
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
5 3-4
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.
To describe the molecular structure.
To give examples of substance exhibiting molecular structure
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.
text book
K.L.B. BOOK II P 65
K.L.B. BOOK IIP 65
5 5
STRUCTURE & BONDING
Trend in physical properties of molecular structures.
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.
K.L.B. BOOK IIP 65
6 1
STRUCTURE & BONDING
Giant atomic structure in diamond.
By the end of the lesson, the learner should be able to:
To describe giant atomic structure in diamond.
To state uses of diamond.
Diagrammatic representation of diamond.
Discuss uses of diamond.
Diagrams in textbooks.
K.L.B. BOOK II P 69
6 2
STRUCTURE & BONDING
Giant atomic structure in graphite.
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.
K.L.B. BOOK II pp 69
6 3-4
STRUCTURE & BONDING
PROPERTIES AND TRENDS ACROSS PERIOD THREE
Metallic bond. Uses of some metals.
Physical properties of elements in periods.
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.




To compare electrical conductivity of elements in period 3
Discussion:
Detailed analysis of comparative physical properties of metals and their uses.



Probing questions & brief explanations.

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.
text book
The periodic table.
K.L.B. BOOK IIP 70
K.L.B. BOOK IIP. 76
6 5
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
7 1
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
7 2
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
7 3-4
PROPERTIES AND TRENDS ACROSS PERIOD THREE
Chemical properties of elements in period 3.
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 oxygen.
To compare reactions of elements in period 3 with water
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.

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. 79-80
K.L.B. BOOK II PP. 80-81
7 5
PROPERTIES AND TRENDS ACROSS PERIOD THREE
Oxides of period 3 elements.
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.
Comparative analysis, discussion and explanation.
The periodic table.
K.L.B. BOOK II P. 84
8

Midterm exam and midterm break

9 1
PROPERTIES AND TRENDS ACROSS PERIOD THREE
Chlorides of period 3 elements.
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.
K.L.B. BOOK II PP. 77-78
9 2
SALTS
Types of salts.
By the end of the lesson, the learner should be able to:
Define a salt.
Describe various types of salts and give several examples in each case.
Descriptive approach. Teacher exposes new concepts.
text book
K.L.B. BOOK II P. 91
9 3-4
SALTS
Solubility of salts in water.
Solubility of bases 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.
To test solubility of various bases in water.
To carry out litmus test on the resulting solutions.
Class experiments- Dissolve salts in 5 cc of water.
Record the solubility in a table,
Analyse the results.
Class experiments- Dissolve salts in 5cc of water.
Record the solubility in a table,
Carry out litmus tests.
Discuss the results.
Sulphates, chlorides, nitrates, carbonates of various metals.




Oxides, hydroxides, of various metals, litmus papers.
K.L.B. BOOK II PP. 92-93
K.L.B. BOOK IIPP. 94-95
9 5
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
10 1
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
10 2
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
10 3-4
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
10 5
SALTS
Ionic equations.
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.
K.L.B. BOOK II
11 1
SALTS
Effects of heat on carbonates.
By the end of the lesson, the learner should be able to:
To state effects of heat on carbonates.
To predict products resulting from heating metal carbonates.
Group experiments- To investigate effects of heat on Na2CO3, K2CO3, CaCO3, ZnCO3, PbCO3, e.t.c.
Observe various colour changes before, during and after heating.
Write equations for the reactions.
Various carbonates.
K.L.B. BOOK II PP. 108-109
11 2
SALTS
Effects of heat on carbonates.
By the end of the lesson, the learner should be able to:
To state effects of heat on carbonates.
To predict products resulting from heating metal carbonates.
Group experiments- To investigate effects of heat on Na2CO3, K2CO3, CaCO3, ZnCO3, PbCO3, e.t.c.
Observe various colour changes before, during and after heating.
Write equations for the reactions.
Various carbonates.
K.L.B. BOOK II PP. 108-109
11 3-4
SALTS
Effects of heat on nitrates.
Effects of heat on sulphates.
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
11 5
SALTS
Hygroscopy, Deliquescence and Efflorescence.
By the end of the lesson, the learner should be able to:
To define hygroscopic deliquescent and efflorescent salts.
To give examples of hygroscopic deliquescent and efflorescent salts.
Prepare a sample of various salts.
Expose them to the atmosphere overnight.
Students classify the salts as hygroscopic, deliquescent and / or efflorescent.
K.L.B. BOOK II P. 114
12 1
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
12 2
EFFECTS OF AN ELECTRIC CURRENT ON SUBSTANCES.
Electrical conductivity.
By the end of the lesson, the learner should be able to:
To test for electrical conductivities of substances.
Group experiments- to identify conductors and non-conductors.
Explain the difference in (non) conductivities.
Various solids, bulb, battery, & wires.
K.L.B. BOOK II PP. 118-119
12-13

End term exam, Markin and closing

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