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| WK | LSN | TOPIC | SUB-TOPIC | OBJECTIVES | T/L ACTIVITIES | T/L AIDS | REFERENCE | REMARKS |
|---|---|---|---|---|---|---|---|---|
| 2 | 1 |
RATES OF REACTION & REVERSIBLE REACTIONS.
|
Effect of temperature of reactants on rate of reaction.
|
By the end of the
lesson, the learner
should be able to:
Explain the effect of temperature on rate of reaction. |
Group experiments: investigate the effects of temperature on the rate of reaction of sodium thiosulphate with dilute HCl.
Sketch and interpret relevant graphs. Discuss the collision theory and effects of activation energy. |
Sodium thiosulphate heated at different temperatures, dilute HCl, stopwatches.
Graph papers. |
K.L.B. BK IV
Pages 80-83 |
|
| 2 | 2 |
RATES OF REACTION & REVERSIBLE REACTIONS.
|
Effect of temperature of reactants on rate of reaction.
|
By the end of the
lesson, the learner
should be able to:
Explain the effect of temperature on rate of reaction. |
Group experiments: investigate the effects of temperature on the rate of reaction of sodium thiosulphate with dilute HCl.
Sketch and interpret relevant graphs. Discuss the collision theory and effects of activation energy. |
Sodium thiosulphate heated at different temperatures, dilute HCl, stopwatches.
Graph papers. |
K.L.B. BK IV
Pages 80-83 |
|
| 2 | 3-4 |
RATES OF REACTION & REVERSIBLE REACTIONS.
|
Effect of change in surface area of reactants on the rate of a reaction.
Effect of a suitable catalyst on the rate of a reaction |
By the end of the
lesson, the learner
should be able to:
Explain the effect of change in surface area on the rate of a reaction. Explain effects of a suitable catalyst on the rate of a reaction. |
Group experiment/ teacher demonstration.
Compare reactions of marble chips with dilute HCl and that of marble chips powder with equally diluted HCl. Collect evolved gas in each case. Teacher asks probing questions related to the observations made. Teacher demonstration: preparation and collection of oxygen gas without using a catalyst, then using manganese (IV) oxide as a catalyst. Explain the results in terms of activation energy. |
Marble chips, marble chips powder, syringes, conical flasks with stoppers, 1M HCl.
Hydrogen peroxide, manganese (IV) oxide. |
K.L.B. BK IV
Pages 83-85 K.L.B. BK IV Pages 85-88 |
|
| 2 | 5 |
RATES OF REACTION & REVERSIBLE REACTIONS.
|
Effect of a suitable catalyst on the rate of a reaction
|
By the end of the
lesson, the learner
should be able to:
Explain effects of a suitable catalyst on the rate of a reaction. |
Teacher demonstration: preparation and collection of oxygen gas without using a catalyst, then using manganese (IV) oxide as a catalyst.
Explain the results in terms of activation energy. |
Hydrogen peroxide, manganese (IV) oxide.
|
K.L.B. BK IV
Pages 85-88 |
|
| 3 | 1 |
RATES OF REACTION & REVERSIBLE REACTIONS.
|
Effect of light on rate of specific reactions.
|
By the end of the
lesson, the learner
should be able to:
Identify reactions that are affected by light. |
Teacher demonstration: decomposition of silver bromide in the presence of light.
Mention other examples of reactions affected by light. |
Silver bromide.
|
K.L.B. BK IV
Pages 89-91 |
|
| 3 | 2 |
RATES OF REACTION & REVERSIBLE REACTIONS.
|
Reversible reactions.
|
By the end of the
lesson, the learner
should be able to:
Write down equations for reversible reactions. |
Q/A: review temporary and permanent changes.
Teacher demonstration: heating crystals of hydrated copper (II) sulphate, then ?hydrating? them. Write the corresponding chemical equations. Give further examples of reversible reactions. |
Crystals of hydrated copper (II) sulphate.
|
K.L.B. BK IV
Pages 91-93 |
|
| 3 | 3-4 |
RATES OF REACTION & REVERSIBLE REACTIONS.
|
Reversible reactions.
State of equilibrium in chemical reactions. |
By the end of the
lesson, the learner
should be able to:
Write down equations for reversible reactions. Define the term equilibrium as used in reversible reactions. Write down equations of reversible reactions in a state of equilibrium. |
Q/A: review temporary and permanent changes.
Teacher demonstration: heating crystals of hydrated copper (II) sulphate, then ?hydrating? them. Write the corresponding chemical equations. Give further examples of reversible reactions. Brief discussion, giving examples of chemical equations for reversible reactions. |
Crystals of hydrated copper (II) sulphate.
student book |
K.L.B. BK IV
Pages 91-93 K.L.B. BK IV Pages 94-95 |
|
| 3 | 5 |
RATES OF REACTION & REVERSIBLE REACTIONS.
|
Le Chatelier?s Principle.
|
By the end of the
lesson, the learner
should be able to:
State Le Chatelier?s Principle. |
Investigate the effect of change of concentration of reactants on equilibrium.
Add 2M sodium hydroxide in steps to bromine water. Make and record observations. Discuss the results leading to Le Chatelier?s Principle. |
Add 2M sodium hydroxide,
|
K.L.B. BK IV
Pages 95-97 |
|
| 4 | 1 |
RATES OF REACTION & REVERSIBLE REACTIONS.
|
Effect of change of pressure and temperature on equilibrium shift.
|
By the end of the
lesson, the learner
should be able to:
Explain the effect of change of pressure & te,perature on equilibrium shift. |
Q/A: review kinetic theory of matter.
Q/A & discussion on effect of change of pressure / temperature on shifting of equilibrium; giving specific examples of chemical equations. Written assignment. |
student book
|
K.L.B. BK IV
Pages 97-101 |
|
| 4 | 2 |
RATES OF REACTION & REVERSIBLE REACTIONS.
|
Effect of change of pressure and temperature on equilibrium shift.
|
By the end of the
lesson, the learner
should be able to:
Explain the effect of change of pressure & te,perature on equilibrium shift. |
Q/A: review kinetic theory of matter.
Q/A & discussion on effect of change of pressure / temperature on shifting of equilibrium; giving specific examples of chemical equations. Written assignment. |
student book
|
K.L.B. BK IV
Pages 97-101 |
|
| 4 | 3-4 |
RATES OF REACTION & REVERSIBLE REACTIONS.
|
Effect of change of pressure and temperature on equilibrium shift.
The Haber Process. |
By the end of the
lesson, the learner
should be able to:
Explain the effect of change of pressure & te,perature on equilibrium shift. Explain the concept optimum conditions of a chemical equilibrium. Explain factors that change the position of equilibrium of the Harber process. |
Q/A: review kinetic theory of matter.
Q/A & discussion on effect of change of pressure / temperature on shifting of equilibrium; giving specific examples of chemical equations. Written assignment. Q/A and detailed discussion on change of pressure, temperature, concentration of ammonia and effect of presence of a suitable catalyst on the Haber process. |
student book
|
K.L.B. BK IV
Pages 97-101 K.L.B. BK IV Pages 102-103 |
|
| 4 | 5 |
RATES OF REACTION & REVERSIBLE REACTIONS.
|
The Contact Process.
|
By the end of the
lesson, the learner
should be able to:
Explain how change of temperature and pressure affect rate of manufacture of sulphur (VI) acid. |
Probing questions and brief discussion.
Assignment. |
student book
|
K.L.B. BK IV
Pages 103-104 |
|
| 5 | 1 |
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 |
|
| 5 | 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 |
|
| 5 | 3-4 |
ELECTRO-CHEMISTRY.
|
Oxidizing Numbers.
|
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
|
K.L.B. BK IV
Pages 109-116 |
|
| 5 | 5 |
ELECTRO-CHEMISTRY.
|
Displacement reactions.
|
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 |
|
| 6 | 1 |
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 |
|
| 6 | 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 |
|
| 6 | 3-4 |
ELECTRO-CHEMISTRY.
|
The oxidizing power of an element.
Cell diagrams. |
By the end of the
lesson, the learner
should be able to:
Arrange elements in order of their oxidizing power. 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 / group expts:
Adding halogens to solutions containing halide ions. Tabulate the results. Discuss the results and arrive at the oxidizing power series of halogens. Teacher demonstration: Zinc/ copper cell. Q/A & discussion: changes in oxidation numbers. Exposition: cell diagram and deducing the direction of electron flow. |
Halogens:
Cl2 (g), Br2 (l), I2 (s). Halides: KCl, KBr, KI. Zinc/ copper cell. |
K.L.B. BK IV
Pages 120-122 K.L.B. BK IV Pages 123-128 |
|
| 6 | 5 |
ELECTRO-CHEMISTRY.
|
Standard Electrode Potentials.
|
By the end of the
lesson, the learner
should be able to:
Identify standard conditions for measuring electrode potentials. Define the term standard electrode potential of a cell. Write half reactions of electrochemical cells. |
Descriptive and expository approaches: teacher exposes new concepts.
|
student book
|
K.L.B. BK IV
Pages 129-131 |
|
| 7 | 1 |
ELECTRO-CHEMISTRY.
|
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 |
|
| 7 | 2 |
ELECTRO-CHEMISTRY.
|
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 |
|
| 7 | 3-4 |
ELECTRO-CHEMISTRY.
|
Standard electrode potential series.
Emf of a cell. |
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. Calculate emf of a cell using standard electrodes potentials. |
Q/A: review reactivity series, oxidizing agent, reducing agent.
Exposition: the order of standard electrode potentials. Discussion: oxidizing and reducing powers of substances. Q/A: review half-cells. Worked examples; supervised practice. Assignment. |
student book
|
K.L.B. BK IV
Pages 131-133 K.L.B. BK IV Pages 133-136 |
|
| 7 | 5 |
ELECTRO-CHEMISTRY.
|
Emf of a cell.
|
By the end of the
lesson, the learner
should be able to:
Calculate emf of a cell using standard electrodes potentials. |
Q/A: review half-cells.
Worked examples; supervised practice. Assignment. |
student book
|
K.L.B. BK IV
Pages 133-136 |
|
| 8 | 1 |
ELECTRO-CHEMISTRY.
|
Possibility of a reaction to take place.
|
By the end of the
lesson, the learner
should be able to:
Predict whether a reaction will take place or not using standard electrode potentials. |
Worked examples.
Oral exercise. Assignment. |
student book
|
K.L.B. BK IV
Pages 136-137 |
|
| 8 | 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 |
|
| 8 | 3-4 |
ELECTRO-CHEMISTRY.
|
Primary and secondary chemical cells.
Electrolysis of dilute NaCl. |
By the end of the
lesson, the learner
should be able to:
Describe the functioning of primary and secondary chemical cells. Define the term electrolysis. Explain the concept of preferential discharge of ions. |
Exposition of new concepts and brief discussion
Assignment. 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. |
student book
Dilute sodium chloride voltameter. |
K.L.B. BK IV
Pages 138-141 K.L.B. BK IV Pages 141-144 |
|
| 9 |
Midterm break |
|||||||
| 10 | 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 |
|
| 10 | 2 |
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 |
|
| 10 | 3-4 |
ELECTRO-CHEMISTRY.
|
Electrolysis of dilute sulphuric (VI) acid.
Factors affecting electrolysis. |
By the end of the
lesson, the learner
should be able to:
Identify products of electrolysis of dilute sulphuric (VI) acid. Explain factors that affect electrolytic products discharged at electrodes. |
Teacher demonstration/ group experiments.
Test for the products of electrolysis. Write relevant equations. 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. |
Sulphuric acid voltameter.
student book |
K.L.B. BK IV
Pages 146-148 K.L.B. BK IV Pages 153-5 |
|
| 10 | 5 |
ELECTRO-CHEMISTRY.
|
Factors affecting electrolysis.
|
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 |
|
| 11 | 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 |
|
| 11 | 2 |
ELECTRO-CHEMISTRY.
|
Faraday?s law of electrolysis.
|
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 |
|
| 11 | 3-4 |
ELECTRO-CHEMISTRY.
RADIOACTIVITY |
Faraday?s law of electrolysis.
Definition of radioactivity. |
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. Define radioactivity, a nuclide and radioactive decay. Differentiate between natural and artificial radioactivity. |
Discuss above results, leading to Faraday?s law of electrolysis.
Worked examples. Assignment. 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. |
Weighing balance, stop watch, copper sulphate voltameter.
student book |
K.L.B. BK IV
Pages 161-4 K.L.B. BK IV Pages 249-251 |
|
| 11 | 5 |
RADIOACTIVITY
|
Definition of radioactivity.
|
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. |
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. |
student book
|
K.L.B. BK IV
Pages 249-251 |
|
| 12 | 1 |
RADIOACTIVITY
|
Alpha particles.
|
By the end of the
lesson, the learner
should be able to:
State properties of alpha particles. Describe methods of detecting alpha particles. |
Q/A: position of helium in the periodic table.
Expository approach: |
student book
|
K.L.B. BK IV
Pages 251-253 |
|
| 12 | 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 |
|
| 12 | 3-4 |
RADIOACTIVITY
|
Beta particles.
Gamma rays.
Radioactive Half-Life. Radioactive decay curve. |
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. Plot a radioactive decay curve to deduce the half ?life from the curve. |
Q/A: Review isotopes.
Expository approach: teacher briefly exposes new concepts. Examples of equations. Supervised practice. Assignment. Drawing a radioactive decay curve inferring the half-life of the sample from the graph. |
student book
Dice. Graph papers. |
K.L.B. BK IV
Pages 251-253 K.L.B. BK IV Pages 254-5 |
|
| 12 | 5 |
RADIOACTIVITY
|
Nuclear fusion and nuclear fission.
Applications of radioactivity.
|
By the end of the
lesson, the learner
should be able to:
Differentiate between nuclear fusion and nuclear fission. Describe applications of radioactivity. |
Exposition of new concepts accompanied by nuclear equations.
Brief discussion: Carbon dating, detecting leakage, medication, agriculture, industry; effect of static charges, etc. |
student book
|
K.L.B. BK IV
Pages 259-260 |
|
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