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Chemistry
Form 4 2025
TERM III
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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
1 1
ORGANIC CHEMISTRY II
Introduction to Alkanols and Nomenclature
By the end of the lesson, the learner should be able to:
Define alkanols and identify functional group
- Apply nomenclature rules for alkanols
- Draw structural formulae of simple alkanols
- Compare alkanols with corresponding alkanes
Q/A: Review alkanes, alkenes from Form 3
- Study functional group -OH concept
- Practice naming alkanols using IUPAC rules
- Complete Table 6.2 - alkanol structures
Molecular models, Table 6.1 and 6.2, alkanol structure charts, student books
KLB Secondary Chemistry Form 4, Pages 167-170
1 2
ORGANIC CHEMISTRY II
Isomerism in Alkanols
By the end of the lesson, the learner should be able to:
Explain positional and chain isomerism
- Draw isomers of given alkanols
- Name different isomeric forms
- Classify isomers as primary, secondary, or tertiary
Study positional isomerism examples (propan-1-ol vs propan-2-ol)
- Practice drawing chain isomers
- Exercises on isomer identification and naming
- Discussion on structural differences
Isomer structure charts, molecular models, practice worksheets, student books
KLB Secondary Chemistry Form 4, Pages 170-171
1 3
ORGANIC CHEMISTRY II
Laboratory Preparation of Ethanol
By the end of the lesson, the learner should be able to:
Describe fermentation process
- Prepare ethanol in laboratory
- Write equation for glucose fermentation
- Explain role of yeast and conditions needed
Experiment 6.1: Fermentation of sugar solution with yeast
- Set up apparatus for 2-3 days
- Observe gas evolution
- Test for CO₂ with lime water
- Smell final product
Sugar, yeast, warm water, conical flask, delivery tube, lime water, thermometer
KLB Secondary Chemistry Form 4, Pages 171-172
1 4-5
ORGANIC CHEMISTRY II
Industrial Preparation and Physical Properties
Chemical Properties of Alkanols I
By the end of the lesson, the learner should be able to:
Explain hydration of ethene method
- Compare laboratory and industrial methods
- Analyze physical properties of alkanols
- Relate properties to molecular structure
Test reactions of ethanol with various reagents
- Write equations for ethanol reactions
- Identify products formed
- Explain reaction mechanisms
Study ethene hydration using phosphoric acid catalyst
- Compare fermentation vs industrial methods
- Analyze Table 6.3 - physical properties
- Discussion on hydrogen bonding effects
Experiment 6.2: Test ethanol with burning, universal indicator, sodium metal, acids
- Record observations in Table 6.4
- Write balanced equations
- Discuss reaction types
Table 6.3, industrial process diagrams, ethene structure models, property comparison charts
Ethanol, sodium metal, universal indicator, concentrated H₂SO₄, ethanoic acid, test tubes
KLB Secondary Chemistry Form 4, Pages 171-173
KLB Secondary Chemistry Form 4, Pages 173-175
2 1
ORGANIC CHEMISTRY II
Chemical Properties of Alkanols II
By the end of the lesson, the learner should be able to:
Investigate oxidation and esterification reactions
- Test oxidizing agents on ethanol
- Prepare esters from alkanols
- Explain dehydration reactions
Complete Experiment 6.2: Test with acidified K₂Cr₂O₇ and KMnO₄
- Observe color changes
- Esterification with ethanoic acid
- Study dehydration conditions
Acidified potassium chromate/manganate, ethanoic acid, concentrated H₂SO₄, heating apparatus
KLB Secondary Chemistry Form 4, Pages 173-176
2 2
ORGANIC CHEMISTRY II
Uses of Alkanols and Health Effects
By the end of the lesson, the learner should be able to:
State various uses of alkanols
- Explain health effects of alcohol consumption
- Discuss methylated spirits
- Analyze alcohol in society
Discussion on alkanol applications as solvents, fuels, antiseptics
- Health effects of alcohol consumption
- Methylated spirits composition
- Social implications
Charts showing alkanol uses, health impact data, methylated spirit samples, discussion materials
KLB Secondary Chemistry Form 4, Pages 176-177
2 3
ORGANIC CHEMISTRY II
Introduction to Alkanoic Acids
Laboratory Preparation of Ethanoic Acid
By the end of the lesson, the learner should be able to:
Define alkanoic acids and functional group
- Apply nomenclature rules
- Draw structural formulae
- Compare with alkanols
Study carboxyl group (-COOH) structure
- Practice naming using IUPAC rules
- Complete Table 6.5 and 6.6
- Compare functional groups of alkanols and acids
Alkanoic acid structure charts, Table 6.5 and 6.6, molecular models, student books
Ethanol, KMnO₄, concentrated H₂SO₄, distillation apparatus, thermometer, round-bottom flask
KLB Secondary Chemistry Form 4, Pages 177-179
2 4-5
ORGANIC CHEMISTRY II
Physical and Chemical Properties of Alkanoic Acids
By the end of the lesson, the learner should be able to:
Investigate chemical reactions of ethanoic acid
- Test with various reagents
- Write chemical equations
- Analyze acid strength
Experiment following Table 6.8: Test ethanoic acid with indicators, metals, carbonates, bases
- Record observations
- Write equations
- Discuss weak acid behavior
2M ethanoic acid, universal indicator, Mg strip, Na₂CO₃, NaOH, phenolphthalein, test tubes
KLB Secondary Chemistry Form 4, Pages 180-182
3 1
ORGANIC CHEMISTRY II
Esterification and Uses of Alkanoic Acids
By the end of the lesson, the learner should be able to:
Explain ester formation process
- Write esterification equations
- State uses of alkanoic acids
- Prepare simple esters
Complete esterification experiments
- Study concentrated H₂SO₄ as catalyst
- Write general esterification equation
- Discuss applications in food, drugs, synthetic fibres
Ethanoic acid, ethanol, concentrated H₂SO₄, test tubes, heating apparatus, cold water
KLB Secondary Chemistry Form 4, Pages 182-183
3 2
ORGANIC CHEMISTRY II
Esterification and Uses of Alkanoic Acids
By the end of the lesson, the learner should be able to:
Explain ester formation process
- Write esterification equations
- State uses of alkanoic acids
- Prepare simple esters
Complete esterification experiments
- Study concentrated H₂SO₄ as catalyst
- Write general esterification equation
- Discuss applications in food, drugs, synthetic fibres
Ethanoic acid, ethanol, concentrated H₂SO₄, test tubes, heating apparatus, cold water
KLB Secondary Chemistry Form 4, Pages 182-183
3 3
ORGANIC CHEMISTRY II
Introduction to Detergents and Soap Preparation
By the end of the lesson, the learner should be able to:
Define detergents and classify types
- Explain saponification process
- Prepare soap in laboratory
- Compare soapy and soapless detergents
Study soap vs soapless detergent differences
- Experiment 6.5: Saponify castor oil with NaOH
- Add salt for salting out
- Test soap formation
Castor oil, 4M NaOH, NaCl, evaporating dish, water bath, stirring rod, filter paper
KLB Secondary Chemistry Form 4, Pages 183-186
3 4-5
ORGANIC CHEMISTRY II
Introduction to Detergents and Soap Preparation
Mode of Action of Soap and Hard Water Effects
By the end of the lesson, the learner should be able to:
Define detergents and classify types
- Explain saponification process
- Prepare soap in laboratory
- Compare soapy and soapless detergents
Explain soap molecule structure
- Describe cleaning mechanism
- Investigate hard water effects
- Compare soap performance in different waters
Study soap vs soapless detergent differences
- Experiment 6.5: Saponify castor oil with NaOH
- Add salt for salting out
- Test soap formation
Study hydrophobic and hydrophilic ends
- Demonstrate micelle formation
- Test soap in distilled vs hard water
- Observe scum formation
- Write precipitation equations
Castor oil, 4M NaOH, NaCl, evaporating dish, water bath, stirring rod, filter paper
Soap samples, distilled water, hard water (CaCl₂/MgSO₄ solutions), test tubes, demonstration materials
KLB Secondary Chemistry Form 4, Pages 183-186
KLB Secondary Chemistry Form 4, Pages 186-188
4 1
ORGANIC CHEMISTRY II
Soapless Detergents and Environmental Effects
By the end of the lesson, the learner should be able to:
Explain soapless detergent preparation
- Compare advantages/disadvantages
- Discuss environmental impact
- Analyze pollution effects
Study alkylbenzene sulphonate preparation
- Compare Table 6.9 - soap vs soapless
- Discussion on eutrophication and biodegradability
- Environmental awareness
Flow charts of detergent manufacture, Table 6.9, environmental impact data, sample detergents
KLB Secondary Chemistry Form 4, Pages 188-191
4 2
ORGANIC CHEMISTRY II
Soapless Detergents and Environmental Effects
By the end of the lesson, the learner should be able to:
Explain soapless detergent preparation
- Compare advantages/disadvantages
- Discuss environmental impact
- Analyze pollution effects
Study alkylbenzene sulphonate preparation
- Compare Table 6.9 - soap vs soapless
- Discussion on eutrophication and biodegradability
- Environmental awareness
Flow charts of detergent manufacture, Table 6.9, environmental impact data, sample detergents
KLB Secondary Chemistry Form 4, Pages 188-191
4 3
ORGANIC CHEMISTRY II
Soapless Detergents and Environmental Effects
By the end of the lesson, the learner should be able to:
Explain soapless detergent preparation
- Compare advantages/disadvantages
- Discuss environmental impact
- Analyze pollution effects
Study alkylbenzene sulphonate preparation
- Compare Table 6.9 - soap vs soapless
- Discussion on eutrophication and biodegradability
- Environmental awareness
Flow charts of detergent manufacture, Table 6.9, environmental impact data, sample detergents
KLB Secondary Chemistry Form 4, Pages 188-191
4 4-5
ORGANIC CHEMISTRY II
Introduction to Polymers and Addition Polymerization
By the end of the lesson, the learner should be able to:
Define polymers, monomers, and polymerization
- Explain addition polymerization
- Draw polymer structures
- Calculate polymer properties
Study polymer concept and terminology
- Practice drawing addition polymers from monomers
- Examples: polyethene, polypropene, PVC
- Calculate molecular masses
Polymer samples, monomer structure charts, molecular models, calculators, polymer formation diagrams
KLB Secondary Chemistry Form 4, Pages 191-195
5 1
ORGANIC CHEMISTRY II
Addition Polymers - Types and Properties
By the end of the lesson, the learner should be able to:
Identify different addition polymers
- Draw structures from monomers
- Name common polymers
- Relate structure to properties
Study polystyrene, PTFE, perspex formation
- Practice identifying monomers from polymer structures
- Work through polymer calculation examples
- Properties analysis
Various polymer samples, structure identification exercises, calculation worksheets, Table 6.10
KLB Secondary Chemistry Form 4, Pages 195-197
5 2
ORGANIC CHEMISTRY II
Addition Polymers - Types and Properties
By the end of the lesson, the learner should be able to:
Identify different addition polymers
- Draw structures from monomers
- Name common polymers
- Relate structure to properties
Study polystyrene, PTFE, perspex formation
- Practice identifying monomers from polymer structures
- Work through polymer calculation examples
- Properties analysis
Various polymer samples, structure identification exercises, calculation worksheets, Table 6.10
KLB Secondary Chemistry Form 4, Pages 195-197
5 3
ORGANIC CHEMISTRY II
Condensation Polymerization and Natural Polymers
By the end of the lesson, the learner should be able to:
Explain condensation polymerization
- Compare with addition polymerization
- Study natural polymers
- Analyze nylon formation
Study nylon 6,6 formation from diamine and dioic acid
- Natural polymers: starch, protein, rubber
- Vulcanization process
- Compare synthetic vs natural
Nylon samples, rubber samples, condensation reaction diagrams, natural polymer examples
KLB Secondary Chemistry Form 4, Pages 197-200
5 4-5
ORGANIC CHEMISTRY II
Polymer Properties and Applications
By the end of the lesson, the learner should be able to:
Compare advantages and disadvantages of synthetic polymers
- State uses of different polymers
- Discuss environmental concerns
- Analyze polymer selection
Study Table 6.10 - polymer uses
- Advantages: strength, lightness, moldability
- Disadvantages: non-biodegradability, toxic gases
- Application analysis
Table 6.10, polymer application samples, environmental impact studies, product examples
KLB Secondary Chemistry Form 4, Pages 200-201
6 1
ORGANIC CHEMISTRY II
Comprehensive Problem Solving and Integration
By the end of the lesson, the learner should be able to:
Solve complex problems involving alkanols and acids
- Apply knowledge to practical situations
- Integrate polymer concepts
- Practice examination questions
Worked examples on organic synthesis
- Problem-solving on isomers, reactions, polymers
- Integration of all unit concepts
- Practice examination-style questions
Comprehensive problem sets, past examination papers, calculators, organic chemistry summary charts
KLB Secondary Chemistry Form 4, Pages 167-201
6 2
ORGANIC CHEMISTRY II
Comprehensive Problem Solving and Integration
By the end of the lesson, the learner should be able to:
Solve complex problems involving alkanols and acids
- Apply knowledge to practical situations
- Integrate polymer concepts
- Practice examination questions
Worked examples on organic synthesis
- Problem-solving on isomers, reactions, polymers
- Integration of all unit concepts
- Practice examination-style questions
Comprehensive problem sets, past examination papers, calculators, organic chemistry summary charts
KLB Secondary Chemistry Form 4, Pages 167-201
6 3
RADIOACTIVITY
Introduction, Nuclear Stability and Types of Radioactivity
By the end of the lesson, the learner should be able to:
Define nuclide, isotope, and radioisotope
- Compare nuclear vs chemical reactions
- Explain neutron/proton ratios
- Distinguish natural from artificial radioactivity
Q/A: Review atomic structure from Form 2
- Study Table 7.1 - nuclear vs chemical reactions
- Analysis of neutron/proton ratios and nuclear stability
- Discussion on natural vs artificial radioactivity
Periodic table, atomic structure charts, Table 7.1, nuclear stability diagrams
KLB Secondary Chemistry Form 4, Pages 199-201
6 4-5
RADIOACTIVITY
Types of Radiation and Their Properties
Radioactive Decay and Half-Life Concept
By the end of the lesson, the learner should be able to:
Identify alpha, beta, and gamma radiations
- Compare penetrating abilities and ionizing power
- Explain electric field deflection
- Analyze safety implications
Define half-life of radioactive isotopes
- Plot radioactive decay curves
- Calculate remaining amounts after decay
- Apply conservation of mass and energy
Study alpha (α), beta (β), gamma (γ) characteristics
- Figure 7.2 - penetrating power demonstration
- Figure 7.3 - electric field effects
- Discussion on radiation protection and detection
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
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
KLB Secondary Chemistry Form 4, Pages 201-204
KLB Secondary Chemistry Form 4, Pages 204-206
7 1
RADIOACTIVITY
Half-Life Calculations and Problem Solving
By the end of the lesson, the learner should be able to:
Solve complex half-life problems
- Determine original amounts from remaining masses
- Apply step-by-step and formula methods
- Compare isotope decay rates
Worked examples on half-life calculations using both methods
- Practice determining original amounts
- Study various isotope half-lives
- Comprehensive problem-solving sessions
Calculators, comprehensive problem sets, worked examples, isotope half-life comparison tables
KLB Secondary Chemistry Form 4, Pages 204-206
7 2
RADIOACTIVITY
Nuclear Reactions and Equations
By the end of the lesson, the learner should be able to:
Write balanced nuclear equations
- Apply conservation laws for mass and atomic numbers
- Explain alpha and beta emission effects
- Balance complex nuclear reactions
Practice writing nuclear equations for alpha emission
- Study beta emission examples
- Apply mass and atomic number conservation
- Balance various nuclear reactions with missing nuclides
Nuclear equation examples, periodic table, conservation law charts, practice worksheets
KLB Secondary Chemistry Form 4, Pages 205-207
7 3
RADIOACTIVITY
Radioactive Decay Series and Sequential Reactions
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
KLB Secondary Chemistry Form 4, Pages 206-207
7 4-5
RADIOACTIVITY
Nuclear Fission and Chain Reactions
Nuclear Fusion and Energy Comparisons
By the end of the lesson, the learner should be able to:
Define nuclear fission process
- Explain mechanism of chain reactions
- Calculate energy release from mass defect
- Describe controlled vs uncontrolled fission
Define nuclear fusion process
- Compare fusion with fission processes
- Write fusion equations
- Explain stellar energy production and fusion applications
Study uranium-235 fission example
- Chain reaction mechanism and critical mass
- Energy calculation from mass-energy equivalence
- Nuclear reactor vs atomic bomb principles
Study hydrogen fusion examples
- Compare fusion vs fission characteristics and energy yields
- Stellar fusion processes
- Hydrogen bomb vs nuclear reactor principles
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 207-208
8 1
RADIOACTIVITY
Medical and Diagnostic 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
KLB Secondary Chemistry Form 4, Pages 208-209
8 2
RADIOACTIVITY
Industrial, Agricultural and Dating Applications
By the end of the lesson, the learner should be able to:
Explain industrial leak detection
- Describe agricultural monitoring techniques
- Discuss carbon-14 dating principles
- Analyze food preservation methods
Study leak detection using short half-life isotopes
- Carbon-14 dating of archaeological materials
- Phosphorus tracking in agriculture
- Gamma radiation food preservation
Carbon dating examples, agricultural application charts, industrial use diagrams, food preservation data
KLB Secondary Chemistry Form 4, Pages 208-209
8 3
RADIOACTIVITY
Industrial, Agricultural and Dating Applications
By the end of the lesson, the learner should be able to:
Explain industrial leak detection
- Describe agricultural monitoring techniques
- Discuss carbon-14 dating principles
- Analyze food preservation methods
Study leak detection using short half-life isotopes
- Carbon-14 dating of archaeological materials
- Phosphorus tracking in agriculture
- Gamma radiation food preservation
Carbon dating examples, agricultural application charts, industrial use diagrams, food preservation data
KLB Secondary Chemistry Form 4, Pages 208-209
8 4-5
RADIOACTIVITY
Radiation Hazards and Environmental Impact
Safety Measures and International Control
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
Explain radiation protection principles
- Describe proper storage and disposal methods
- Discuss IAEA role and standards
- Analyze monitoring and control systems
Study Chernobyl and Three Mile Island accidents
- Genetic mutation and cancer effects
- Long-term radiation exposure consequences
- Nuclear waste disposal challenges
Study IAEA guidelines and international cooperation
- Radiation protection protocols and ALARA principle
- Safe storage, transport and disposal methods
- Environmental monitoring systems
Accident case studies, environmental impact data, radiation exposure charts, contamination maps
IAEA guidelines, safety protocol charts, monitoring equipment diagrams, international cooperation data
KLB Secondary Chemistry Form 4, Pages 209-210
9 1
RADIOACTIVITY
Half-Life Problem Solving and Graph Analysis
By the end of the lesson, the learner should be able to:
Solve comprehensive half-life problems
- Analyze experimental decay data
- Plot and interpret decay curves
- Determine half-lives graphically
Plot decay curves from experimental data
- Determine half-lives from graphs
- Analyze count rate vs time data
- Complex half-life calculation problems
Graph paper, experimental data sets, calculators, statistical analysis examples, comprehensive problem sets
KLB Secondary Chemistry Form 4, Pages 199-210
9 2
RADIOACTIVITY
Half-Life Problem Solving and Graph Analysis
By the end of the lesson, the learner should be able to:
Solve comprehensive half-life problems
- Analyze experimental decay data
- Plot and interpret decay curves
- Determine half-lives graphically
Plot decay curves from experimental data
- Determine half-lives from graphs
- Analyze count rate vs time data
- Complex half-life calculation problems
Graph paper, experimental data sets, calculators, statistical analysis examples, comprehensive problem sets
KLB Secondary Chemistry Form 4, Pages 199-210
9 3
RADIOACTIVITY
Half-Life Problem Solving and Graph Analysis
By the end of the lesson, the learner should be able to:
Solve comprehensive half-life problems
- Analyze experimental decay data
- Plot and interpret decay curves
- Determine half-lives graphically
Plot decay curves from experimental data
- Determine half-lives from graphs
- Analyze count rate vs time data
- Complex half-life calculation problems
Graph paper, experimental data sets, calculators, statistical analysis examples, comprehensive problem sets
KLB Secondary Chemistry Form 4, Pages 199-210
9 4-5
RADIOACTIVITY
Nuclear Equations and Conservation Laws
By the end of the lesson, the learner should be able to:
Balance complex nuclear equations
- Complete nuclear reaction series
- Identify unknown nuclides using conservation laws
- Apply mass-energy relationships
Practice balancing nuclear reactions with multiple steps
- Complete partial decay series
- Identify missing nuclides using conservation principles
- Mass-energy calculation problems
Nuclear equation worksheets, periodic table, decay series diagrams, conservation law examples
KLB Secondary Chemistry Form 4, Pages 199-210

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