Module 4: Chemistry
Air composition and combustion.
Use this workbook to practice core KCSE communication skills and record evidence of progress.
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SECTION: CHEMISTRY
MODULE: 4
Part A: Units
1. Air and combustion
a. Composition of air
b. Properties of oxygen
c. Combustion
d. Pollution
Part B: Project
Investigate air, oxygen, and combustion in daily life.
Project Title: Air and Combustion Observation
Objective: Observe properties of air and combustion and identify pollution sources.
Project Instructions:
- 1. Identify common sources of air pollution in your area.
- 2. Observe a safe combustion activity (candle burning) and note changes.
- 3. Describe the role of oxygen in combustion.
- 4. Suggest two ways to reduce pollution locally.
- 5. Consult your coach where necessary.
Evidence to Submit:
- • Notes on combustion observation.
- • List of pollution sources and solutions.
- • Short explanation of oxygen’s role.
Submission
Part C: Training Others
Teach a peer about air and combustion.
Guidance:
- • Explain the composition of air.
- • Describe how oxygen supports combustion.
- • Discuss ways to reduce air pollution.
Reflection:
- • What did the learner understand well?
- • What needed more explanation?
- • What support do you need from your coach?
Submission
Part D: Assessment
Competency Levels:
1 = Expectations not met
2 = Partially met
3 = Satisfactorily met
4 = Excellently met
Self-assessment:
- • Composition of air:
- • Combustion and oxygen:
- • Air pollution and control:
Coach assessment:
- • Composition of air:
- • Combustion and oxygen:
- • Air pollution and control:
Submission
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