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WK | LSN | TOPIC | SUB-TOPIC | OBJECTIVES | T/L ACTIVITIES | T/L AIDS | REFERENCE | REMARKS |
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1 |
Practicals revision |
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2 | 1 |
ELECTRO-CHEMISTRY.
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Redox reactions.
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By the end of the lesson, the learner should be able to:
Describe redox reactions in terms of gain / loss of electrons. Identify oxidizing / reducing agents involved in redox reactions. |
Q/A: review cations, anions and charges. Write down ionic half equations and identify reducing / oxidizing agents. |
student book
|
K.L.B. BK IV
Pages 108-9 |
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2 | 2 |
ELECTRO-CHEMISTRY.
|
Redox reactions.
|
By the end of the lesson, the learner should be able to:
Describe redox reactions in terms of gain / loss of electrons. Identify oxidizing / reducing agents involved in redox reactions. |
Q/A: review cations, anions and charges. Write down ionic half equations and identify reducing / oxidizing agents. |
student book
|
K.L.B. BK IV
Pages 108-9 |
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2 | 3 |
ELECTRO-CHEMISTRY.
|
Oxidizing Numbers.
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By the end of the lesson, the learner should be able to:
Outline rules of assigning oxidation numbers. Determine the oxidation numbers of an element in a given compound. Explain the use of oxidation numbers in naming compounds. |
Exposition and giving specific examples.
Work out oxidizing number of elements in given compounds. Copy and complete a table of compounds containing elements that more than one oxidation number. |
student book
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K.L.B. BK IV
Pages 109-116 |
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2 | 4-5 |
ELECTRO-CHEMISTRY.
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Displacement reactions.
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By the end of the lesson, the learner should be able to:
Explain change of oxidation numbers during redox / displacement reactions. Arrange elements in order of their reducing power. |
Class standard experiments: reacting metals with solutions containing metal ions.
Taking note of reactions and those that do not take place; and tabulating the results. |
Metals: Ca, Na, Zn, Fe, Pb, and Cu.
Solutions containing Ca2+, Mg2+, Zn2+, Fe2+. |
K.L.B. BK IV
Pages 116-120 |
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3 | 1 |
ELECTRO-CHEMISTRY.
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The oxidizing power of an element.
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By the end of the lesson, the learner should be able to:
Arrange elements in order of their oxidizing power. |
Teacher demonstration / group expts:
Adding halogens to solutions containing halide ions. Tabulate the results. Discuss the results and arrive at the oxidizing power series of halogens. |
Halogens:
Cl2 (g), Br2 (l), I2 (s). Halides: KCl, KBr, KI. |
K.L.B. BK IV
Pages 120-122 |
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3 | 2 |
ELECTRO-CHEMISTRY.
|
The oxidizing power of an element.
|
By the end of the lesson, the learner should be able to:
Arrange elements in order of their oxidizing power. |
Teacher demonstration / group expts:
Adding halogens to solutions containing halide ions. Tabulate the results. Discuss the results and arrive at the oxidizing power series of halogens. |
Halogens:
Cl2 (g), Br2 (l), I2 (s). Halides: KCl, KBr, KI. |
K.L.B. BK IV
Pages 120-122 |
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3 | 3 |
ELECTRO-CHEMISTRY.
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Cell diagrams.
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By the end of the lesson, the learner should be able to:
Define the terms electrode, potential and e.m.f. of an electrochemical cell. Describe components of a cell diagram. Draw cell diagrams using correct notations. |
Teacher demonstration: Zinc/ copper cell.
Q/A & discussion: changes in oxidation numbers. Exposition: cell diagram and deducing the direction of electron flow. |
Zinc/ copper cell.
|
K.L.B. BK IV
Pages 123-128 |
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3 | 4-5 |
ELECTRO-CHEMISTRY.
|
Cell diagrams.
Standard Electrode Potentials. |
By the end of the lesson, the learner should be able to:
Define the terms electrode, potential and e.m.f. of an electrochemical cell. Describe components of a cell diagram. Draw cell diagrams using correct notations. Identify standard conditions for measuring electrode potentials. Define the term standard electrode potential of a cell. Write half reactions of electrochemical cells. |
Teacher demonstration: Zinc/ copper cell.
Q/A & discussion: changes in oxidation numbers. Exposition: cell diagram and deducing the direction of electron flow. Descriptive and expository approaches: teacher exposes new concepts. |
Zinc/ copper cell.
student book |
K.L.B. BK IV
Pages 123-128 K.L.B. BK IV Pages 129-131 |
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4 | 1 |
ELECTRO-CHEMISTRY.
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Standard electrode potential series.
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By the end of the lesson, the learner should be able to:
Recall the order of standard electrode potentials. Compare oxidizing and reducing powers of substances. |
Q/A: review reactivity series, oxidizing agent, reducing agent.
Exposition: the order of standard electrode potentials. Discussion: oxidizing and reducing powers of substances. |
student book
|
K.L.B. BK IV
Pages 131-133 |
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4 | 2 |
ELECTRO-CHEMISTRY.
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Standard electrode potential series.
|
By the end of the lesson, the learner should be able to:
Recall the order of standard electrode potentials. Compare oxidizing and reducing powers of substances. |
Q/A: review reactivity series, oxidizing agent, reducing agent.
Exposition: the order of standard electrode potentials. Discussion: oxidizing and reducing powers of substances. |
student book
|
K.L.B. BK IV
Pages 131-133 |
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4 | 3 |
ELECTRO-CHEMISTRY.
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Standard electrode potential series.
|
By the end of the lesson, the learner should be able to:
Recall the order of standard electrode potentials. Compare oxidizing and reducing powers of substances. |
Q/A: review reactivity series, oxidizing agent, reducing agent.
Exposition: the order of standard electrode potentials. Discussion: oxidizing and reducing powers of substances. |
student book
|
K.L.B. BK IV
Pages 131-133 |
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4 | 4-5 |
ELECTRO-CHEMISTRY.
|
Emf of a cell.
Possibility of a reaction to take place. |
By the end of the lesson, the learner should be able to:
Calculate emf of a cell using standard electrodes potentials. Predict whether a reaction will take place or not using standard electrode potentials. |
Q/A: review half-cells.
Worked examples; supervised practice. Assignment. Worked examples. Oral exercise. Assignment. |
student book
|
K.L.B. BK IV
Pages 133-136 K.L.B. BK IV Pages 136-137 |
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5 | 1 |
ELECTRO-CHEMISTRY.
|
Primary and secondary chemical cells.
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By the end of the lesson, the learner should be able to:
Describe the functioning of primary and secondary chemical cells. |
Exposition of new concepts and brief discussion
Assignment. |
student book
|
K.L.B. BK IV
Pages 138-141 |
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5 | 2 |
ELECTRO-CHEMISTRY.
|
Primary and secondary chemical cells.
|
By the end of the lesson, the learner should be able to:
Describe the functioning of primary and secondary chemical cells. |
Exposition of new concepts and brief discussion
Assignment. |
student book
|
K.L.B. BK IV
Pages 138-141 |
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5 | 3 |
ELECTRO-CHEMISTRY.
|
Primary and secondary chemical cells.
|
By the end of the lesson, the learner should be able to:
Describe the functioning of primary and secondary chemical cells. |
Exposition of new concepts and brief discussion
Assignment. |
student book
|
K.L.B. BK IV
Pages 138-141 |
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5 | 4-5 |
ELECTRO-CHEMISTRY.
|
Electrolysis of dilute NaCl.
|
By the end of the lesson, the learner should be able to:
Define the term electrolysis. Explain the concept of preferential discharge of ions. |
Teacher demonstration: electrolysis of dilute sodium chloride with carbon electrodes.
Test for gases collected. Write down equations of reactions at each electrode. Discussion: preferential discharge of ions at electrodes. |
Dilute sodium chloride voltameter.
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K.L.B. BK IV
Pages 141-144 |
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6 | 1 |
ELECTRO-CHEMISTRY.
|
Electrolysis of brine.
|
By the end of the lesson, the learner should be able to:
Identify products of electrolysis of brine. |
Teacher demonstration/ group experiments.
Test for the products of electrolysis. Write relevant equations. |
Brine voltameter.
|
K.L.B. BK IV
Pages 144-146 |
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6 | 2 |
ELECTRO-CHEMISTRY.
|
Electrolysis of dilute sulphuric (VI) acid.
|
By the end of the lesson, the learner should be able to:
Identify products of electrolysis of dilute sulphuric (VI) acid. |
Teacher demonstration/ group experiments.
Test for the products of electrolysis. Write relevant equations. |
Sulphuric acid voltameter.
|
K.L.B. BK IV
Pages 146-148 |
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6 | 3 |
ELECTRO-CHEMISTRY.
|
Electrolysis of dilute sulphuric (VI) acid.
|
By the end of the lesson, the learner should be able to:
Identify products of electrolysis of dilute sulphuric (VI) acid. |
Teacher demonstration/ group experiments.
Test for the products of electrolysis. Write relevant equations. |
Sulphuric acid voltameter.
|
K.L.B. BK IV
Pages 146-148 |
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6 | 4-5 |
ELECTRO-CHEMISTRY.
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Factors affecting electrolysis.
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By the end of the lesson, the learner should be able to:
Explain factors that affect electrolytic products discharged at electrodes. |
Q/A: review the electrochemical series of elements.
Teacher writes down order of ease of discharge of ions at electrodes. Discussion: other factors; giving suitable examples. |
student book
|
K.L.B. BK IV
Pages 153-5 |
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7 | 1 |
ELECTRO-CHEMISTRY.
|
Application of electrolysis.
|
By the end of the lesson, the learner should be able to:
Describe some applications of electrolysis. |
Probing questions and brief discussion on applications of electrolysis.
Practical assignment on electrolysis: electroplating an iron nail with a suitable metal. |
Suitable voltameter.
|
K.L.B. BK IV
Pages 155-7 |
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7 | 2 |
ELECTRO-CHEMISTRY.
|
Faraday?s law of electrolysis.
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By the end of the lesson, the learner should be able to:
State Faraday?s law of electrolysis. Solve problems related to Faraday?s law of electrolysis. |
Discuss above results, leading to Faraday?s law of electrolysis.
Worked examples. Assignment. |
Weighing balance, stop watch, copper sulphate voltameter.
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K.L.B. BK IV
Pages 161-4 |
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7 | 3 |
ELECTRO-CHEMISTRY.
|
Faraday?s law of electrolysis.
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By the end of the lesson, the learner should be able to:
State Faraday?s law of electrolysis. Solve problems related to Faraday?s law of electrolysis. |
Discuss above results, leading to Faraday?s law of electrolysis.
Worked examples. Assignment. |
Weighing balance, stop watch, copper sulphate voltameter.
|
K.L.B. BK IV
Pages 161-4 |
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7 | 4-5 |
RADIOACTIVITY
|
Definition of radioactivity.
Alpha particles. |
By the end of the lesson, the learner should be able to:
Define radioactivity, a nuclide and radioactive decay. Differentiate between natural and artificial radioactivity. State properties of alpha particles. Describe methods of detecting alpha particles. |
Q/A: Review the atomic structure. Exposition: symbolic representation of an atom / nucleus. Exposition: meaning of radioactivity and radioactive decay. Discussion: artificial and natural radioactivity. Q/A: position of helium in the periodic table. Expository approach: |
student book
|
K.L.B. BK IV
Pages 249-251 K.L.B. BK IV Pages 251-253 |
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8 | 1 |
RADIOACTIVITY
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Equations involving alpha particles.
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By the end of the lesson, the learner should be able to:
Write down and balance equations involving alpha particles. |
Q/A: Review atomic and mass numbers.
Examples of balanced equations. Supervised practice. |
student book
|
K.L.B. BK IV
Page 257 |
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8 | 2 |
RADIOACTIVITY
|
Equations involving alpha particles.
|
By the end of the lesson, the learner should be able to:
Write down and balance equations involving alpha particles. |
Q/A: Review atomic and mass numbers.
Examples of balanced equations. Supervised practice. |
student book
|
K.L.B. BK IV
Page 257 |
|
8 | 3 |
RADIOACTIVITY
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Beta particles.
Gamma rays.
Radioactive Half-Life. |
By the end of the lesson, the learner should be able to:
State properties of beta particles. Define isotopes and isobars. Write down balanced equations involving both alpha and beta particles. State properties of gamma rays. Define the term radioactive half-life. Solve problems relating to half ?life |
Q/A: Review isotopes.
Expository approach: teacher briefly exposes new concepts. Examples of equations. Supervised practice. Assignment. Teacher demonstration: Dice experiment. Exposition of the term half-life. Worked examples. Written exercise |
student book
Dice. |
K.L.B. BK IV
Pages 251-253 |
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8 | 4-5 |
RADIOACTIVITY
|
Radioactive decay curve.
Nuclear fusion and nuclear fission. Applications of radioactivity. |
By the end of the lesson, the learner should be able to:
Plot a radioactive decay curve to deduce the half ?life from the curve. Differentiate between nuclear fusion and nuclear fission. Describe applications of radioactivity. |
Drawing a radioactive decay curve inferring the half-life of the sample from the graph.
Exposition of new concepts accompanied by nuclear equations. Brief discussion: Carbon dating, detecting leakage, medication, agriculture, industry; effect of static charges, etc. |
Graph papers.
student book |
K.L.B. BK IV
Pages 254-5 K.L.B. BK IV Pages 259-260 |
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9 |
School closing |
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