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| WK | LSN | TOPIC | SUB-TOPIC | OBJECTIVES | T/L ACTIVITIES | T/L AIDS | REFERENCE | REMARKS |
|---|---|---|---|---|---|---|---|---|
| 1 | 4 |
REACTION RATES AND REVERSIBLE REACTIONS
|
Definition of Reaction Rate and Collision Theory
Effect of Concentration on Reaction Rate |
By the end of the
lesson, the learner
should be able to:
- Define rate of reaction and explain the term activation energy -Describe collision theory and explain why not all collisions result in products -Draw energy diagrams showing activation energy -Explain how activation energy affects reaction rates |
Q/A: Compare speeds of different reactions (precipitation vs rusting). Define reaction rate as "measure of how much reactants are consumed or products formed per unit time." Introduce collision theory: particles must collide with minimum energy (activation energy) for successful reaction. Draw energy diagram showing activation energy barrier. Discuss factors affecting collision frequency and energy.
|
Examples of fast/slow reactions, energy diagram templates, chalk/markers for diagrams
4 conical flasks, 2M H₂SO₄, distilled water, magnesium ribbon, stopwatch, measuring cylinders, graph paper |
KLB Secondary Chemistry Form 4, Pages 64-65
|
|
| 1 | 5 |
REACTION RATES AND REVERSIBLE REACTIONS
|
Change of Reaction Rate with Time
|
By the end of the
lesson, the learner
should be able to:
- Describe methods used to measure rate of reaction -Investigate how reaction rate changes as reaction proceeds -Plot graphs of volume of gas vs time -Calculate average rates at different time intervals |
Class experiment: React 2cm magnesium ribbon with 100cm³ of 0.5M HCl in conical flask. Collect H₂ gas in graduated syringe as in Fig 3.4. Record gas volume every 30 seconds for 5 minutes in Table 3.2. Plot volume vs time graph. Calculate average rates between time intervals. Explain why rate decreases as reactants are consumed.
|
0.5M HCl, magnesium ribbon, conical flask, gas collection apparatus, graduated syringe, stopwatch, graph paper
|
KLB Secondary Chemistry Form 4, Pages 67-70
|
|
| 2 | 1 |
REACTION RATES AND REVERSIBLE REACTIONS
|
Effect of Temperature on Reaction Rate
Effect of Surface Area on Reaction Rate |
By the end of the
lesson, the learner
should be able to:
- Explain the effect of temperature on reaction rates -Investigate temperature effects using sodium thiosulphate and HCl -Plot graphs of time vs temperature and 1/time vs temperature -Apply collision theory to explain temperature effects |
Class experiment: Place 30cm³ of 0.15M Na₂S₂O₃ in flasks at room temp, 30°C, 40°C, 50°C, 60°C. Mark cross on paper under flask. Add 5cm³ of 2M HCl, time until cross disappears. Record in Table 3.4. Plot time vs temperature and 1/time vs temperature graphs. Explain: higher temperature → more kinetic energy → more effective collisions.
|
0.15M Na₂S₂O₃, 2M HCl, conical flasks, water baths at different temperatures, paper with cross marked, stopwatch, thermometers
Marble chips, marble powder, 1M HCl, gas collection apparatus, balance, conical flasks, measuring cylinders, graph paper |
KLB Secondary Chemistry Form 4, Pages 70-73
|
|
| 2 | 2-3 |
REACTION RATES AND REVERSIBLE REACTIONS
|
Effect of Catalysts on Reaction Rate
Effect of Light and Pressure on Reaction Rate Reversible Reactions |
By the end of the
lesson, the learner
should be able to:
- Explain effects of suitable catalysts on reaction rates -Investigate decomposition of hydrogen peroxide with and without catalyst -Define catalyst and explain how catalysts work -Compare activation energies in catalyzed vs uncatalyzed reactions - Identify reactions affected by light -Investigate effect of light on silver bromide decomposition -Explain effect of pressure on gaseous reactions -Give examples of photochemical reactions |
Class experiment: Decompose 5cm³ of 20-volume H₂O₂ in 45cm³ water without catalyst, collect O₂ gas. Repeat adding 2g MnO₂ powder. Record gas volumes as in Fig 3.12. Compare rates and final mass of MnO₂. Write equation: 2H₂O₂ → 2H₂O + O₂. Define catalyst and explain how it lowers activation energy. Show energy diagrams for both pathways.
Teacher demonstration: Mix KBr and AgNO₃ solutions to form AgBr precipitate. Divide into 3 test tubes: place one in dark cupboard, one on bench, one in direct sunlight. Observe color changes after 10 minutes. Write equations. Discuss photochemical reactions: photography, Cl₂ + H₂, photosynthesis. Explain pressure effects on gaseous reactions through compression. |
20-volume H₂O₂, MnO₂ powder, gas collection apparatus, balance, conical flasks, filter paper, measuring cylinders
0.1M KBr, 0.05M AgNO₃, test tubes, dark cupboard, direct light source, examples of photochemical reactions CuSO₄·5H₂O crystals, boiling tubes, delivery tube, heating source, test tube holder |
KLB Secondary Chemistry Form 4, Pages 76-78
KLB Secondary Chemistry Form 4, Pages 78-80 |
|
| 2 | 4 |
REACTION RATES AND REVERSIBLE REACTIONS
|
Chemical Equilibrium
|
By the end of the
lesson, the learner
should be able to:
- Explain chemical equilibrium -Define dynamic equilibrium -Investigate acid-base equilibrium using indicators -Explain why equilibrium appears static but is actually dynamic |
Experiment: Add 0.5M NaOH to 2cm³ in boiling tube with universal indicator. Add 0.5M HCl dropwise until green color (neutralization point). Continue adding base then acid alternately, observe color changes. Explain equilibrium as state where forward and backward reaction rates are equal. Use NH₄Cl ⇌ NH₃ + HCl example to show dynamic nature. Introduce equilibrium symbol ⇌.
|
0.5M NaOH, 0.5M HCl, universal indicator, boiling tubes, droppers, examples of equilibrium systems
|
KLB Secondary Chemistry Form 4, Pages 80-82
|
|
| 2 | 5 |
REACTION RATES AND REVERSIBLE REACTIONS
|
Le Chatelier's Principle and Effect of Concentration
|
By the end of the
lesson, the learner
should be able to:
- State Le Chatelier's Principle -Explain effect of concentration changes on equilibrium position -Investigate bromine water equilibrium with acid/base addition -Apply Le Chatelier's Principle to predict equilibrium shifts |
Experiment: Add 2M NaOH dropwise to 20cm³ bromine water until colorless. Then add 2M HCl until excess, observe color return. Write equation: Br₂ + H₂O ⇌ HBr + HBrO. Explain Le Chatelier's Principle: "When change applied to system at equilibrium, system moves to oppose that change." Demonstrate with chromate/dichromate equilibrium: CrO₄²⁻ + H⁺ ⇌ Cr₂O₇²⁻ + H₂O.
|
Bromine water, 2M NaOH, 2M HCl, beakers, chromate/dichromate solutions for demonstration
|
KLB Secondary Chemistry Form 4, Pages 82-84
|
|
| 3 | 1 |
REACTION RATES AND REVERSIBLE REACTIONS
|
Effect of Pressure and Temperature on Equilibrium
Industrial Applications - Haber Process |
By the end of the
lesson, the learner
should be able to:
- Explain effect of pressure changes on equilibrium -Explain effect of temperature changes on equilibrium -Investigate NO₂/N₂O₄ equilibrium with temperature -Apply Le Chatelier's Principle to industrial processes |
Teacher demonstration: React copper turnings with concentrated HNO₃ to produce NO₂ gas in test tube. Heat and cool the tube, observe color changes: brown ⇌ pale yellow representing 2NO₂ ⇌ N₂O₄. Explain pressure effects using molecule count. Show Table 3.7 with pressure effects. Discuss temperature effects: heating favors endothermic direction, cooling favors exothermic direction. Use Table 3.8.
|
Copper turnings, concentrated HNO₃, test tubes, heating source, ice bath, gas collection apparatus, safety equipment
Haber Process flow diagram, equilibrium data showing temperature/pressure effects on NH₃ yield, industrial catalyst information |
KLB Secondary Chemistry Form 4, Pages 84-87
|
|
| 3 | 2-3 |
REACTION RATES AND REVERSIBLE REACTIONS
ELECTROCHEMISTRY |
Industrial Applications - Contact Process
Factors Affecting Electrolysis Applications of Electrolysis I |
By the end of the
lesson, the learner
should be able to:
- Apply equilibrium principles to Contact Process -Explain optimum conditions for sulphuric acid manufacture -Compare different industrial equilibrium processes -Evaluate economic factors in industrial chemistry Identify factors affecting preferential discharge - Explain electrochemical series influence - Discuss concentration and electrode effects - Predict electrolysis products |
Analyze Contact Process: 2SO₂ + O₂ ⇌ 2SO₃ ΔH = -197 kJ/mol. Apply principles: high pressure favors forward reaction (3 molecules → 2 molecules), low temperature favors exothermic reaction. Explain optimum conditions: 450°C, atmospheric pressure, V₂O₅ catalyst, 96% conversion. Compare with Haber Process. Discuss catalyst choice and economic factors.
Review electrochemical series and discharge order - Analysis of concentration effects on product formation - Summary of all factors affecting electrolysis - Practice prediction problems |
Contact Process flow diagram, comparison table with Haber Process, catalyst effectiveness data
Electrochemical series chart, summary tables, practice exercises, student books Iron nails, copper electrodes, CuSO₄ solution, power supply, industrial process diagrams |
KLB Secondary Chemistry Form 4, Pages 89
KLB Secondary Chemistry Form 4, Pages 153-155 |
|
| 3 | 4 |
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 | 5 |
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
|
|
| 4 | 1 |
ELECTROCHEMISTRY
|
Electrolysis Calculations II
|
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
|
KLB Secondary Chemistry Form 4, Pages 161-164
|
|
| 4 | 2-3 |
ELECTROCHEMISTRY
RADIOACTIVITY RADIOACTIVITY |
Advanced Applications and Problem Solving
Introduction, Nuclear Stability and Types of Radioactivity Types of Radiation and Their Properties Radioactive Decay and Half-Life Concept Half-Life Calculations and Problem Solving Nuclear Reactions and Equations |
By the end of the
lesson, the learner
should be able to:
Solve examination-type electrochemistry problems - Apply all concepts in integrated problems - Analyze real-world electrochemical processes - Practice complex calculations Define half-life of radioactive isotopes - Plot radioactive decay curves - Calculate remaining amounts after decay - Apply conservation of mass and energy |
Comprehensive problems combining redox, cells, and electrolysis
- Past examination questions - Industrial case study analysis - Advanced problem-solving techniques Study Table 7.2 - iodine-131 decay data - Plot decay graph using given data - Calculate fractions remaining after multiple half-lives - Practice basic half-life problems |
Past papers, comprehensive problem sets, industrial case studies, calculators
Periodic table, atomic structure charts, Table 7.1, nuclear stability diagrams Radiation type charts, penetration diagrams, electric field illustrations, safety equipment charts Graph paper, Table 7.2 data, calculators, decay curve examples, half-life data table Calculators, comprehensive problem sets, worked examples, isotope half-life comparison tables Nuclear equation examples, periodic table, conservation law charts, practice worksheets |
KLB Secondary Chemistry Form 4, Pages 108-164
KLB Secondary Chemistry Form 4, Pages 204-206 |
|
| 4 | 4 |
RADIOACTIVITY
|
Radioactive Decay Series and Sequential Reactions
Nuclear Fission and Chain Reactions Nuclear Fusion and Energy Comparisons |
By the end of the
lesson, the learner
should be able to:
Explain sequential radioactive decay - Trace decay series pathways - Identify stable end products - Complete partial decay series |
Study thorium-232 decay series example
- Trace sequential alpha and beta emissions - Identify stable lead-208 endpoint - Practice completing decay series with missing nuclides |
Decay series charts, thorium series diagram, nuclide stability charts, practice decay series
Fission reaction diagrams, chain reaction illustrations, nuclear reactor diagrams, energy calculation examples Fusion reaction diagrams, comparison tables, stellar fusion charts, energy comparison data |
KLB Secondary Chemistry Form 4, Pages 206-207
|
|
| 4 | 5 |
RADIOACTIVITY
|
Medical and Diagnostic Applications
Industrial, Agricultural and Dating Applications |
By the end of the
lesson, the learner
should be able to:
Describe medical applications of radioisotopes - Explain cancer treatment using radiation - Discuss diagnostic procedures and imaging - Analyze therapeutic vs diagnostic uses |
Study cobalt-60 and caesium-137 in cancer treatment
- Iodine-131 in thyroid monitoring - Bone growth and fracture healing monitoring - Sterilization of surgical instruments |
Medical radioisotope charts, treatment procedure diagrams, diagnostic equipment images, case studies
Carbon dating examples, agricultural application charts, industrial use diagrams, food preservation data |
KLB Secondary Chemistry Form 4, Pages 208-209
|
|
| 5 | 1 |
RADIOACTIVITY
|
Radiation Hazards and Environmental Impact
|
By the end of the
lesson, the learner
should be able to:
Identify radiation health hazards - Explain genetic mutation effects - Discuss major nuclear accidents - Analyze long-term environmental contamination |
Study Chernobyl and Three Mile Island accidents
- Genetic mutation and cancer effects - Long-term radiation exposure consequences - Nuclear waste disposal challenges |
Accident case studies, environmental impact data, radiation exposure charts, contamination maps
|
KLB Secondary Chemistry Form 4, Pages 209-210
|
|
| 5 | 2-3 |
RADIOACTIVITY
RADIOACTIVITY Chemistry Paper 1 Revision |
Safety Measures and International Control
Half-Life Problem Solving and Graph Analysis Nuclear Equations and Conservation Laws Section A: Short Answer Questions |
By the end of the
lesson, the learner
should be able to:
Explain radiation protection principles - Describe proper storage and disposal methods - Discuss IAEA role and standards - Analyze monitoring and control systems Balance complex nuclear equations - Complete nuclear reaction series - Identify unknown nuclides using conservation laws - Apply mass-energy relationships |
Study IAEA guidelines and international cooperation
- Radiation protection protocols and ALARA principle - Safe storage, transport and disposal methods - Environmental monitoring systems Practice balancing nuclear reactions with multiple steps - Complete partial decay series - Identify missing nuclides using conservation principles - Mass-energy calculation problems |
IAEA guidelines, safety protocol charts, monitoring equipment diagrams, international cooperation data
Graph paper, experimental data sets, calculators, statistical analysis examples, comprehensive problem sets Nuclear equation worksheets, periodic table, decay series diagrams, conservation law examples Past Chemistry Paper 1 exams, Marking Schemes |
KLB Secondary Chemistry Form 4, Pages 209-210
KLB Secondary Chemistry Form 4, Pages 199-210 |
|
| 5 | 4 |
REVISION
Chemistry Paper 1 Revision Chemistry Paper 1 Revision |
Section A: Short Answer Questions
Integrated Short Answer Practice |
By the end of the
lesson, the learner
should be able to:
– practice a variety of short-answer questions across different Chemistry topics – apply knowledge of experimental setups, chemical properties, and reactions – improve accuracy and clarity in responses |
Teacher demonstrates answering approaches Students work in groups to discuss selected questions Class review using marking scheme
|
Past Papers, Chalkboard, Chemistry Charts
Full Past Paper 1, Answer Booklets, Marking Schemes |
KLB Chemistry Bk 1–4
|
|
| 5 | 5 |
Chemistry Paper 2 Revision
|
Structured Questions: Analysis & Explanations
Structured Questions: Calculations & Reactions Integrated Exam Practice |
By the end of the
lesson, the learner
should be able to:
- attempt structured questions systematically - interpret and explain concepts from the Periodic Table, gases, and bonding - apply scientific reasoning to short-answer questions |
Learners attempt selected structured questions Teacher guides marking and discusses common errors Class shares strategies for improving explanations
|
Past Chemistry Paper 2 exams, Marking Schemes, Whiteboard
Calculators, Revision Exercises, Charts Past Papers, Marking Schemes, Exam Answer Sheets |
KLB Chem Bk 2–4, KCSE Past Papers
|
|
| 6 | 1 |
Chemistry Paper 3 Revision
Chemistry Paper 1 Revision |
Quantitative Practical Skills
Qualitative Practical Skills Section A: Short Answer Questions |
By the end of the
lesson, the learner
should be able to:
- apply correct laboratory techniques in measuring and mixing solutions - record results systematically and accurately - analyze practical data to make valid conclusions |
Teacher reviews quantitative procedures Learners practice measurement and recording Class discussion on data presentation and interpretation
|
Laboratory apparatus, Past Papers
Laboratory apparatus, Reagents, Past Papers Past Chemistry Paper 1 exams, Marking Schemes |
KLB Chem Bk 1–4, KCSE Past Papers
|
|
| 6 | 2-3 |
Chemistry Paper 1 Revision
Chemistry Paper 2 Revision Chemistry Paper 2 Revision Chemistry Paper 3 Revision |
Section A: Short Answer Questions
Integrated Short Answer Practice Structured Questions: Analysis & Explanations Structured Questions: Calculations & Reactions Integrated Exam Practice Quantitative Practical Skills |
By the end of the
lesson, the learner
should be able to:
– practice a variety of short-answer questions across different Chemistry topics – apply knowledge of experimental setups, chemical properties, and reactions – improve accuracy and clarity in responses - solve questions involving mole ratios, empirical formulae, titration, and gas laws - write and balance chemical equations - present working clearly for full marks |
Teacher demonstrates answering approaches Students work in groups to discuss selected questions Class review using marking scheme
Learners attempt numerical and equation-based questions in groups Teacher reviews answers using marking scheme Class discussion of calculation shortcuts and common pitfalls |
Past Papers, Chalkboard, Chemistry Charts
Full Past Paper 1, Answer Booklets, Marking Schemes Past Chemistry Paper 2 exams, Marking Schemes, Whiteboard Calculators, Revision Exercises, Charts Past Papers, Marking Schemes, Exam Answer Sheets Laboratory apparatus, Past Papers |
KLB Chemistry Bk 1–4
KCSE Past Papers, Revision Kits |
|
| 6 | 4 |
Chemistry Paper 3 Revision
Chemistry Paper 1 Revision Chemistry Paper 1 Revision |
Qualitative Practical Skills
Section A: Short Answer Questions Section A: Short Answer Questions |
By the end of the
lesson, the learner
should be able to:
- make accurate observations during experiments - record results clearly and systematically - draw correct inferences from experimental outcomes |
Teacher demonstrates step-by-step approach to qualitative tasks Learners carry out tests in groups Group review of observations vs. inferences
|
Laboratory apparatus, Reagents, Past Papers
Past Chemistry Paper 1 exams, Marking Schemes Past Papers, Chalkboard, Chemistry Charts |
KLB Chem Bk 1–4, KCSE Past Papers
|
|
| 6 | 5 |
Chemistry Paper 1 Revision
Chemistry Paper 2 Revision Chemistry Paper 2 Revision |
Integrated Short Answer Practice
Structured Questions: Analysis & Explanations Structured Questions: Calculations & Reactions |
By the end of the
lesson, the learner
should be able to:
– integrate knowledge from all Chemistry topics to solve mixed Paper 1 questions – practice time management under exam conditions – review answers using marking schemes and teacher feedback |
Students attempt a timed set of Paper 1 questions (mock) Teacher leads whole-class marking and discussion of common errors
|
Full Past Paper 1, Answer Booklets, Marking Schemes
Past Chemistry Paper 2 exams, Marking Schemes, Whiteboard Calculators, Revision Exercises, Charts |
KCSE Past Papers, Teachers’ Guide
|
|
| 7 | 1 |
Chemistry Paper 2 Revision
Chemistry Paper 3 Revision Chemistry Paper 3 Revision |
Integrated Exam Practice
Quantitative Practical Skills Qualitative Practical Skills |
By the end of the
lesson, the learner
should be able to:
- integrate knowledge across topics (organic, industrial, acids/bases, gases) - apply time management in answering compulsory Paper 2 questions - self-assess answers against marking scheme |
Learners sit for a timed mock (selected Paper 2 questions) Peer marking guided by marking scheme Teacher highlights answering techniques and improvement areas
|
Past Papers, Marking Schemes, Exam Answer Sheets
Laboratory apparatus, Past Papers Laboratory apparatus, Reagents, Past Papers |
KLB Chem Bk 1–4, KCSE Past Papers
|
|
| 7 | 2-3 |
Chemistry Paper 1 Revision
Chemistry Paper 2 Revision |
Section A: Short Answer Questions
Integrated Short Answer Practice Structured Questions: Analysis & Explanations Structured Questions: Calculations & Reactions Integrated Exam Practice |
By the end of the
lesson, the learner
should be able to:
– attempt compulsory short-answer questions – recall and explain key chemistry concepts clearly – apply correct working in simple chemical calculations - attempt structured questions systematically - interpret and explain concepts from the Periodic Table, gases, and bonding - apply scientific reasoning to short-answer questions |
Students attempt selected short-answer questions individually Peer-marking and teacher correction through discussion
Learners attempt selected structured questions Teacher guides marking and discusses common errors Class shares strategies for improving explanations |
Past Chemistry Paper 1 exams, Marking Schemes
Past Papers, Chalkboard, Chemistry Charts Full Past Paper 1, Answer Booklets, Marking Schemes Past Chemistry Paper 2 exams, Marking Schemes, Whiteboard Calculators, Revision Exercises, Charts Past Papers, Marking Schemes, Exam Answer Sheets |
KLB Chemistry Bk 1–4, KCSE Past Papers
KLB Chem Bk 2–4, KCSE Past Papers |
|
| 7 | 4 |
Chemistry Paper 3 Revision
Chemistry Paper 1 Revision |
Quantitative Practical Skills
Qualitative Practical Skills Section A: Short Answer Questions |
By the end of the
lesson, the learner
should be able to:
- apply correct laboratory techniques in measuring and mixing solutions - record results systematically and accurately - analyze practical data to make valid conclusions |
Teacher reviews quantitative procedures Learners practice measurement and recording Class discussion on data presentation and interpretation
|
Laboratory apparatus, Past Papers
Laboratory apparatus, Reagents, Past Papers Past Chemistry Paper 1 exams, Marking Schemes |
KLB Chem Bk 1–4, KCSE Past Papers
|
|
| 7 | 5 |
Chemistry Paper 1 Revision
Chemistry Paper 2 Revision |
Section A: Short Answer Questions
Integrated Short Answer Practice Structured Questions: Analysis & Explanations |
By the end of the
lesson, the learner
should be able to:
– practice a variety of short-answer questions across different Chemistry topics – apply knowledge of experimental setups, chemical properties, and reactions – improve accuracy and clarity in responses |
Teacher demonstrates answering approaches Students work in groups to discuss selected questions Class review using marking scheme
|
Past Papers, Chalkboard, Chemistry Charts
Full Past Paper 1, Answer Booklets, Marking Schemes Past Chemistry Paper 2 exams, Marking Schemes, Whiteboard |
KLB Chemistry Bk 1–4
|
|
| 8 | 1 |
Chemistry Paper 2 Revision
Chemistry Paper 3 Revision |
Structured Questions: Calculations & Reactions
Integrated Exam Practice Quantitative Practical Skills |
By the end of the
lesson, the learner
should be able to:
- solve questions involving mole ratios, empirical formulae, titration, and gas laws - write and balance chemical equations - present working clearly for full marks |
Learners attempt numerical and equation-based questions in groups Teacher reviews answers using marking scheme Class discussion of calculation shortcuts and common pitfalls
|
Calculators, Revision Exercises, Charts
Past Papers, Marking Schemes, Exam Answer Sheets Laboratory apparatus, Past Papers |
KCSE Past Papers, Revision Kits
|
|
| 8 | 2-3 |
Chemistry Paper 3 Revision
Chemistry Paper 1 Revision Chemistry Paper 1 Revision Chemistry Paper 1 Revision Chemistry Paper 2 Revision |
Qualitative Practical Skills
Section A: Short Answer Questions Section A: Short Answer Questions Integrated Short Answer Practice Structured Questions: Analysis & Explanations |
By the end of the
lesson, the learner
should be able to:
- make accurate observations during experiments - record results clearly and systematically - draw correct inferences from experimental outcomes – integrate knowledge from all Chemistry topics to solve mixed Paper 1 questions – practice time management under exam conditions – review answers using marking schemes and teacher feedback |
Teacher demonstrates step-by-step approach to qualitative tasks Learners carry out tests in groups Group review of observations vs. inferences
Students attempt a timed set of Paper 1 questions (mock) Teacher leads whole-class marking and discussion of common errors |
Laboratory apparatus, Reagents, Past Papers
Past Chemistry Paper 1 exams, Marking Schemes Past Papers, Chalkboard, Chemistry Charts Full Past Paper 1, Answer Booklets, Marking Schemes Past Chemistry Paper 2 exams, Marking Schemes, Whiteboard |
KLB Chem Bk 1–4, KCSE Past Papers
KCSE Past Papers, Teachers’ Guide |
|
| 8 | 4 |
Chemistry Paper 2 Revision
Chemistry Paper 3 Revision |
Structured Questions: Calculations & Reactions
Integrated Exam Practice Quantitative Practical Skills |
By the end of the
lesson, the learner
should be able to:
- solve questions involving mole ratios, empirical formulae, titration, and gas laws - write and balance chemical equations - present working clearly for full marks |
Learners attempt numerical and equation-based questions in groups Teacher reviews answers using marking scheme Class discussion of calculation shortcuts and common pitfalls
|
Calculators, Revision Exercises, Charts
Past Papers, Marking Schemes, Exam Answer Sheets Laboratory apparatus, Past Papers |
KCSE Past Papers, Revision Kits
|
|
| 8 | 5 |
Chemistry Paper 3 Revision
Chemistry Paper 1 Revision Chemistry Paper 1 Revision |
Qualitative Practical Skills
Section A: Short Answer Questions Section A: Short Answer Questions |
By the end of the
lesson, the learner
should be able to:
- make accurate observations during experiments - record results clearly and systematically - draw correct inferences from experimental outcomes |
Teacher demonstrates step-by-step approach to qualitative tasks Learners carry out tests in groups Group review of observations vs. inferences
|
Laboratory apparatus, Reagents, Past Papers
Past Chemistry Paper 1 exams, Marking Schemes Past Papers, Chalkboard, Chemistry Charts |
KLB Chem Bk 1–4, KCSE Past Papers
|
|
| 9 | 1 |
Chemistry Paper 1 Revision
Chemistry Paper 2 Revision Chemistry Paper 2 Revision |
Integrated Short Answer Practice
Structured Questions: Analysis & Explanations Structured Questions: Calculations & Reactions |
By the end of the
lesson, the learner
should be able to:
– integrate knowledge from all Chemistry topics to solve mixed Paper 1 questions – practice time management under exam conditions – review answers using marking schemes and teacher feedback |
Students attempt a timed set of Paper 1 questions (mock) Teacher leads whole-class marking and discussion of common errors
|
Full Past Paper 1, Answer Booklets, Marking Schemes
Past Chemistry Paper 2 exams, Marking Schemes, Whiteboard Calculators, Revision Exercises, Charts |
KCSE Past Papers, Teachers’ Guide
|
|
| 9 | 2-3 |
Chemistry Paper 2 Revision
Chemistry Paper 3 Revision Chemistry Paper 3 Revision Chemistry Paper 1 Revision |
Integrated Exam Practice
Quantitative Practical Skills Qualitative Practical Skills Section A: Short Answer Questions Integrated Short Answer Practice |
By the end of the
lesson, the learner
should be able to:
- integrate knowledge across topics (organic, industrial, acids/bases, gases) - apply time management in answering compulsory Paper 2 questions - self-assess answers against marking scheme – attempt compulsory short-answer questions – recall and explain key chemistry concepts clearly – apply correct working in simple chemical calculations |
Learners sit for a timed mock (selected Paper 2 questions) Peer marking guided by marking scheme Teacher highlights answering techniques and improvement areas
Students attempt selected short-answer questions individually Peer-marking and teacher correction through discussion |
Past Papers, Marking Schemes, Exam Answer Sheets
Laboratory apparatus, Past Papers Laboratory apparatus, Reagents, Past Papers Past Chemistry Paper 1 exams, Marking Schemes Past Papers, Chalkboard, Chemistry Charts Full Past Paper 1, Answer Booklets, Marking Schemes |
KLB Chem Bk 1–4, KCSE Past Papers
KLB Chemistry Bk 1–4, KCSE Past Papers |
|
| 9 | 4 |
Chemistry Paper 2 Revision
|
Structured Questions: Analysis & Explanations
Structured Questions: Calculations & Reactions Integrated Exam Practice |
By the end of the
lesson, the learner
should be able to:
- attempt structured questions systematically - interpret and explain concepts from the Periodic Table, gases, and bonding - apply scientific reasoning to short-answer questions |
Learners attempt selected structured questions Teacher guides marking and discusses common errors Class shares strategies for improving explanations
|
Past Chemistry Paper 2 exams, Marking Schemes, Whiteboard
Calculators, Revision Exercises, Charts Past Papers, Marking Schemes, Exam Answer Sheets |
KLB Chem Bk 2–4, KCSE Past Papers
|
|
| 9 | 5 |
Chemistry Paper 3 Revision
|
Quantitative Practical Skills
Qualitative Practical Skills |
By the end of the
lesson, the learner
should be able to:
- apply correct laboratory techniques in measuring and mixing solutions - record results systematically and accurately - analyze practical data to make valid conclusions |
Teacher reviews quantitative procedures Learners practice measurement and recording Class discussion on data presentation and interpretation
|
Laboratory apparatus, Past Papers
Laboratory apparatus, Reagents, Past Papers |
KLB Chem Bk 1–4, KCSE Past Papers
|
|
| 10-12 |
KCSE EXAMINATION |
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