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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
2 1
STRUCTURE & BONDING
Chemical bonds. Ionic bond.
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
K.L.B. BOOK IIP54




PP 57-58
2 2
STRUCTURE & BONDING
Ionic bond representation.
By the end of the lesson, the learner should be able to:
Use dot and cross diagrams to represent ionic bonding.
Drawing diagrams of ionic bonds.
Chart- dot and cross diagrams.
Models for bonding.
K.L.B. BOOK II P. 58
2 3
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
2 4-5
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.
Explain the formation of covalent bond
Use dot and cross diagrams to represent covalent bond.
Analyse tabulated comparative physical properties of ionic compounds.

Teacher asks probing questions.
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 IIPP 58-59
K.L.B. BOOK II PP 60-63
3 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
3 2
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
3 3
STRUCTURE & BONDING
Molecular structure.
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
Discussion ? To explain formation of the giant structure and give examples of substance exhibiting molecular structure.
text book
K.L.B. BOOK IIP 65
3 4-5
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.
To describe giant atomic structure in diamond.
To state uses of diamond.
Discuss comparative physical properties of substances. exhibiting molecular structure.
Explain variation in the physical properties.
Diagrammatic representation of diamond.
Discuss uses of diamond.
Sugar, naphthalene, iodine rhombic sulphur.
Diagrams in textbooks.
K.L.B. BOOK IIP 65
K.L.B. BOOK II P 69
4 1
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
4 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
4 3
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
4 4-5
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
5 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
5 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
5 3
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
5 4-5
PROPERTIES AND TRENDS ACROSS PERIOD THREE
Chemical properties of elements in the third period.
Oxides 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 identify bonds across elements in period 3.
To explain chemical behavior of their oxide.
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 P. 84
6 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
6 2
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
6 3
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
6 4-5
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
7 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
7 2
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
7 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
7 4-5
SALTS
Methods of preparing various salts.
Direct synthesis of a salts.
By the end of the lesson, the learner should be able to:
To describe various methods of preparing some salts.
To describe direct synthesis of a salt.
To write balanced equations for the reactions.
Experimental and descriptive treatments of preparation of salts e.g. ZnSO4, CuSO4, NaCl and Pb(NO3)2.


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.
CuO, H2SO4, HCl, NaOH, PbCO3, dil HNO3.
Iron,
Sulphur
K.L.B. BOOK II pp96
K.L.B. BOOK II P. 104
8 1
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
8 2
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
8 3
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
8 4-5
SALTS
Effects of heat on carbonates.
Effects of heat on nitrates.
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.
To state effects of heat on nitrates.
To predict products resulting from heating metal nitrates.
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.

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.
Various carbonates.
Common metal nitrates.
K.L.B. BOOK II PP. 108-109
K.L.B. BOOK II PP. 110-111
9

Midterm break

10 1
SALTS
Effects of heat on sulphates.
By the end of the lesson, the learner should be able to:
To state effects of heat on sulphates.
To predict products results from heating metal sulphates.
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 sulphates.
K.L.B. BOOK II P. 113
10 2
SALTS
Effects of heat on sulphates.
By the end of the lesson, the learner should be able to:
To state effects of heat on sulphates.
To predict products results from heating metal sulphates.
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 sulphates.
K.L.B. BOOK II P. 113
10 3
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
10 4-5
SALTS
EFFECTS OF AN ELECTRIC CURRENT ON SUBSTANCES.
Uses of salts.
Electrical conductivity.
By the end of the lesson, the learner should be able to:
To state uses of salts
To test for electrical conductivities of substances.
Teacher elucidates uses of salts.
Group experiments- to identify conductors and non-conductors.
Explain the difference in (non) conductivities.

Various solids, bulb, battery, & wires.
K.L.B. BOOK II P. 114
K.L.B. BOOK II PP. 118-119
11 1
EFFECTS OF AN ELECTRIC CURRENT ON SUBSTANCES.
Molten electrolytes.
By the end of the lesson, the learner should be able to:
To test for electrical conductivities molten electrolytes.
Group experiments- to identify electrolytes in molten form.
Explain the difference in molten electrolytes.
Molten candle wax
Sugar
Sulphur
Lead oxide.
K.L.B. BOOK IIPP. 120-121
11 2
EFFECTS OF AN ELECTRIC CURRENT ON SUBSTANCES.
Electrolysis.
By the end of the lesson, the learner should be able to:
To define electrolysis
To describe the process of electrolysis in terms of charge movement.
Descriptive approach punctuated with Q/A.
K.L.B. BOOK II
11 3
EFFECTS OF AN ELECTRIC CURRENT ON SUBSTANCES.
Electrolysis.
By the end of the lesson, the learner should be able to:
To define electrolysis
To describe the process of electrolysis in terms of charge movement.
Descriptive approach punctuated with Q/A.
K.L.B. BOOK II
11 4-5
EFFECTS OF AN ELECTRIC CURRENT ON SUBSTANCES.
Aqueous electrolytes. Electrodes.
By the end of the lesson, the learner should be able to:
To define an electrolyte
To test for electrical conductivities of electrodes.
To investigate chemical effect of an electric current.
Classify the solutions as electrolyte or non -electrolytes.
Discuss the electrical properties of the solutions.
Graphite electrodes
Battery
Various aqueous solutions switch bulb.
K.L.B. BOOK II PP.122-123
12 1
EFFECTS OF AN ELECTRIC CURRENT ON SUBSTANCES.
Reaction on electrodes.
By the end of the lesson, the learner should be able to:
To describe half- equation reactions at the cathode and anode
To demonstrate ?Electrolysis of molten lead (II) bromide
Observe colour changes
Explanation of half-equations and reactions at the electrodes.
Graphite electrodes
Battery
Various aqueous solutions switch.
K.L.B. BOOK II PP.126-127
12 2
EFFECTS OF AN ELECTRIC CURRENT ON SUBSTANCES.
Binary electrolyte.
By the end of the lesson, the learner should be able to:
To define a binary electrolyte.
To state the products of a binary electrolyte.
Completing a table of electrolysis of binary electrolytes.
text book
K.L.B. BOOK II P.127
12 3
EFFECTS OF AN ELECTRIC CURRENT ON SUBSTANCES.
Binary electrolyte.
By the end of the lesson, the learner should be able to:
To define a binary electrolyte.
To state the products of a binary electrolyte.
Completing a table of electrolysis of binary electrolytes.
text book
K.L.B. BOOK II P.127
12 4-5
EFFECTS OF AN ELECTRIC CURRENT ON SUBSTANCES.
Application of electrolysis.
Electroplating.
By the end of the lesson, the learner should be able to:
To state application of electrolysis.
To describe electroplating process.
Discussion and explanations.
Experiment- Left overnight.
Electroplating an iron nail with silver nitrate/ copper sulphate.
Brief discussion.
text book
Silver nitrate
Iron nail
Complete circuit battery.
K.L.B. BOOK II P. 128
K.L.B. BOOK II PP. 129-30

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