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SCHEME OF WORK
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 1-2
STRUCTURE & BONDING
Covalent bond.
Co-ordinate bond.
Molecular structure.
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.
To describe the co-ordinate bond
To represent co-ordinate bond diagrammatically.
Exposition: Shared pair of electrons in a hydrogen molecule, H2O, NH3, Cl2, and CO2.
Drawing of dot-and-cross diagrams of covalent bonds.

Exposition- teacher explains the nature of co-ordinate bond.
Students represent co-ordinate bond diagrammatically.
text book
K.L.B. BOOK II PP 60-63
K.L.B. BOOK II P 65
2 3
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
2 4
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
3 1-2
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
3 3
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
3 4
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
4 1-2
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
4 3
PROPERTIES AND TRENDS ACROSS PERIOD THREE
Oxides of period 3 elements.
Chlorides 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
4 4
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
5 1-2
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
5 3
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
5 4
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
6 1-2
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
6 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
6 4
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
7 1-2
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 define hygroscopic deliquescent and efflorescent salts.
To give examples of hygroscopic deliquescent and efflorescent salts.
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.

Prepare a sample of various salts.
Expose them to the atmosphere overnight.
Students classify the salts as hygroscopic, deliquescent and / or efflorescent.
Common metal nitrates.
Common sulphates.
K.L.B. BOOK II PP. 110-111
K.L.B. BOOK II P. 114
7 3
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
7 4
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
8

Midterm break,exam

9 1-2
CARBON AND SOME OF ITS COMPOUNDS.
Allotropy.
Physical and chemical properties of diamond, graphite and amorphous carbon
Burning carbon and oxygen.
By the end of the lesson, the learner should be able to:
Define allotropes and allotropy.
Identify allotropes of carbon.
Represent diamond and graphite diagrammatically.

Describe reaction of carbon with oxygen.
Teacher exposes new terms.
Review covalent bond.
Discuss boding in diamond and graphite.

Teacher demonstration- Prepare oxygen and pass dry oxygen into a tube containing carbon. Heat the carbon. Observe effects on limewater.
text book
Charcoal, graphite.
Carbon, limewater, tube, limewater stand& Bunsen burner.
K.L.B. BOOK II PP. 131-133
K.L.B. BOOK II PP. 134-135
9 3
CARBON AND SOME OF ITS COMPOUNDS.
Reduction properties of carbon.
By the end of the lesson, the learner should be able to:
Describe reduction properties of carbon.
Show reduction properties of carbon.
Teacher demonstration ? Burn strongly a mixture of carbon and CuO on a bottle top.
Observe colour changes and give underlying explanation
CuO, pounded charcoal, Bunsen burner& bottle top
K.L.B. BOOK II P.126
9 4
CARBON AND SOME OF ITS COMPOUNDS.
Reaction of carbon with acids. Preparation of CO2.
By the end of the lesson, the learner should be able to:
Describe reaction of carbon with acids.




Prepare CO2 in the lab.
Teacher demonstration- reaction of carbon with hot conc HNO3.
Write balanced equations for the reaction.

Review effects of heat on carbonates.
Group experiments/teacher demonstration- preparation of CO2.
Conc. HNO3, limewater.
K.L.B. BOOK II P.126
10 1-2
CARBON AND SOME OF ITS COMPOUNDS.
Properties of CO2.
Chemical equations for reactions involving CO2.
By the end of the lesson, the learner should be able to:
Describe properties of CO2
Write balanced CO2.
Simple experiments to determine properties of CO2.

Discuss the observations.

Give examples of reactions. Write corresponding balanced chemical equations.
Lime water,
Magnesium ribbon,
Universal indicator,
lit candle.
text book
K.L.B. BOOK II PP.138-139
K.L.B. BOOK II PP.139-140
10 3
CARBON AND SOME OF ITS COMPOUNDS.
Uses of CO2.
By the end of the lesson, the learner should be able to:
State uses of CO2
Discuss briefly the uses of CO2.
text book
K.L.B. BOOK II PP.140-1
10 4
CARBON AND SOME OF ITS COMPOUNDS.
Carbon monoxide lab preparation.
Chemical properties of carbon monoxide.
By the end of the lesson, the learner should be able to:
To describe preparation of carbon monoxide in the lab
Teacher demonstration: preparation of carbon monoxide in the lab.
Make observations.
text book
K.L.B. BOOK II PP. 142-143
11 1-2
CARBON AND SOME OF ITS COMPOUNDS.
Carbonates and hydrogen carbonates.
Heating carbonates and hydrogen carbonates.
By the end of the lesson, the learner should be able to:
To write chemical equations for reactions of carbonates and hydrogen carbonates with acids.
To write equations for reaction of carbonates and hydrogen carbonates on heating.
Discuss the observations above.
Write chemical equations for the reactions.
Discuss the above observations.
Write corresponding balanced equations.
text book
K.L.B. BOOK II
K.L.B. BOOK II PP.150-151
11 3
CARBON AND SOME OF ITS COMPOUNDS.
Extraction of sodium carbonate from trona.
By the end of the lesson, the learner should be able to:
To draw schematic diagram for extraction of sodium carbonates.
Discuss each step of the process.
Write relevant equations.
text book
K.L.B. BOOK II PP. 153-157
11 4
CARBON AND SOME OF ITS COMPOUNDS.
Solvay process of preparing sodium carbonate.
By the end of the lesson, the learner should be able to:
To draw schematic diagram for extraction of sodium carbonates.
Discuss each step of the process.

Write relevant equations.
text book, chart
K.L.B. BOOK II
12 1
CARBON AND SOME OF ITS COMPOUNDS.
Importance of carbon in nature. & its effects on the environment.
By the end of the lesson, the learner should be able to:
To discuss: - Importance of carbon in nature.
&
Effects of carbon on the environment.
Discuss the carbon cycle and processes that increase/ reduce amount of CO2 in the air.
Uses of CO2 in soft drinks and fire extinguishers.
text book
K.L.B. BOOK II PP.157-158

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