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| WK | LSN | TOPIC | SUB-TOPIC | OBJECTIVES | T/L ACTIVITIES | T/L AIDS | REFERENCE | REMARKS |
|---|---|---|---|---|---|---|---|---|
| 2 | 1 |
ELECTROCHEMISTRY
|
Redox Reactions and Oxidation Numbers
|
By the end of the
lesson, the learner
should be able to:
Define redox reactions in terms of electron transfer - State rules for assigning oxidation numbers - Calculate oxidation numbers in compounds - Identify oxidation and reduction processes |
Q/A: Review previous knowledge
- Experiment 4.1: Iron filings + copper(II) sulphate - Experiment 4.2: Iron(II) ions + hydrogen peroxide - Discussion on oxidation number rules with examples |
Iron filings, 1M CuSO₄, 1M FeSO₄, 2M NaOH, 20V H₂O₂, test tubes
|
KLB Secondary Chemistry Form 4, Pages 108-116
|
|
| 2 | 2 |
ELECTROCHEMISTRY
|
Oxidation Numbers in Naming and Redox Identification
Displacement Reactions - Metals and Halogens |
By the end of the
lesson, the learner
should be able to:
Apply oxidation numbers to systematic naming - Use oxidation numbers to identify redox reactions - Distinguish oxidizing and reducing agents - Track electron movement in reactions |
Worked examples: Calculate oxidation numbers in complex compounds
- Practice IUPAC naming - Exercise 4.1: Identify redox reactions using oxidation numbers - Name compounds with variable oxidation states |
Compound charts, calculators, student books, practice exercises
Various metals (Ca, Mg, Zn, Fe, Pb, Cu), metal salt solutions, halogens (Cl₂, Br₂, I₂), halide solutions |
KLB Secondary Chemistry Form 4, Pages 109-116
|
|
| 2 | 3 |
ELECTROCHEMISTRY
|
Electrochemical Cells and Cell Diagrams
Standard Electrode Potentials Calculating Cell EMF and Predicting Reactions |
By the end of the
lesson, the learner
should be able to:
Define electrode potential and EMF - Describe electrochemical cell components - Draw cell diagrams using correct notation - Explain electron flow and salt bridge function |
Experiment 4.5: Set up Zn/Cu cell and other metal combinations
- Measure EMF values - Practice writing cell notation - Learn conventional representation methods |
Metal electrodes, 1M metal salt solutions, voltmeters, salt bridges, connecting wires
Standard electrode potential table, diagrams, charts showing standard conditions Calculators, electrode potential data, worked examples, practice problems |
KLB Secondary Chemistry Form 4, Pages 123-128
|
|
| 2 | 4 |
ELECTROCHEMISTRY
|
Types of Electrochemical Cells
Electrolysis of Aqueous Solutions I |
By the end of the
lesson, the learner
should be able to:
Describe functioning of primary and secondary cells - Compare different cell types - Explain fuel cell operation - State applications of electrochemical cells |
Study dry cell (Le Clanche) and lead-acid accumulator
- Hydrogen-oxygen fuel cell operation - Compare cell types and applications - Discussion on advantages/disadvantages |
Cell diagrams, sample batteries, charts showing cell applications
Dilute and concentrated NaCl solutions, carbon electrodes, gas collection tubes, test equipment |
KLB Secondary Chemistry Form 4, Pages 138-141
|
|
| 2 | 5 |
ELECTROCHEMISTRY
|
Electrolysis of Aqueous Solutions II
Effect of Electrode Material on Electrolysis |
By the end of the
lesson, the learner
should be able to:
Analyze electrolysis of dilute sulphuric acid - Investigate electrolysis of metal salt solutions - Measure gas volumes and ratios - Apply theoretical predictions |
Experiment 4.7: Electrolysis of dilute H₂SO₄ using U-tube
- Experiment 4.8: Electrolysis of MgSO₄ solution - Collect and measure gases - Analyze volume ratios |
U-tube apparatus, 2M H₂SO₄, 0.5M MgSO₄, platinum/carbon electrodes, gas syringes
Copper and carbon electrodes, 3M CuSO₄ solution, accurate balance, beakers, connecting wires |
KLB Secondary Chemistry Form 4, Pages 146-148
|
|
| 3 | 1 |
ELECTROCHEMISTRY
|
Factors Affecting Electrolysis
|
By the end of the
lesson, the learner
should be able to:
Identify factors affecting preferential discharge - Explain electrochemical series influence - Discuss concentration and electrode effects - Predict electrolysis products |
Review electrochemical series and discharge order
- Analysis of concentration effects on product formation - Summary of all factors affecting electrolysis - Practice prediction problems |
Electrochemical series chart, summary tables, practice exercises, student books
|
KLB Secondary Chemistry Form 4, Pages 153-155
|
|
| 3 | 2 |
ELECTROCHEMISTRY
|
Applications of Electrolysis I
|
By the end of the
lesson, the learner
should be able to:
Describe electrolytic extraction of reactive metals - Explain electroplating process - Apply electrolysis principles to metal coating - Design electroplating setup |
Discussion: Extraction of Na, Mg, Al by electrolysis
- Practical: Electroplate iron nail with copper - Calculate plating requirements - Industrial applications |
Iron nails, copper electrodes, CuSO₄ solution, power supply, industrial process diagrams
|
KLB Secondary Chemistry Form 4, Pages 155-157
|
|
| 3 | 3 |
ELECTROCHEMISTRY
|
Applications of Electrolysis II
|
By the end of the
lesson, the learner
should be able to:
Describe manufacture of NaOH and Cl₂ from brine - Explain mercury cell operation - Analyze industrial electrolysis processes - Discuss environmental considerations |
Study mercury cell for NaOH production
- Flow chart analysis of industrial processes - Discussion on applications and environmental impact - Purification of metals |
Flow charts, mercury cell diagrams, environmental impact data, industrial case studies
|
KLB Secondary Chemistry Form 4, Pages 155-157
|
|
| 3 | 4 |
ELECTROCHEMISTRY
|
Faraday's Laws and Quantitative Electrolysis
Electrolysis Calculations I |
By the end of the
lesson, the learner
should be able to:
State Faraday's laws of electrolysis - Define Faraday constant - Calculate mass deposited in electrolysis - Relate electricity to amount of substance |
Experiment 4.10: Quantitative electrolysis of CuSO₄
- Measure mass vs electricity passed - Calculate Faraday constant - Verify Faraday's laws |
Accurate balance, copper electrodes, CuSO₄ solution, ammeter, timer, calculators
Calculators, worked examples, practice problems, gas volume data, Faraday constant |
KLB Secondary Chemistry Form 4, Pages 161-164
|
|
| 3 | 5 |
ELECTROCHEMISTRY
|
Electrolysis Calculations II
Advanced Applications and Problem Solving |
By the end of the
lesson, the learner
should be able to:
Determine charge on ions from electrolysis data - Calculate current-time relationships - Solve complex multi-step problems - Apply concepts to industrial situations |
Complex problems: Determine ionic charges
- Current-time-mass relationships - Multi-step calculations - Industrial calculation examples |
Calculators, complex problem sets, industrial data, student books
Past papers, comprehensive problem sets, industrial case studies, calculators |
KLB Secondary Chemistry Form 4, Pages 161-164
|
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