Diagram pack
Combustion Reaction
Fuel + oxygen → CO₂ + water + energy — opposite story to photosynthesis.
Combustion releases energy by combining fuel with oxygen.
Content quality
Content quality
- Quality
- School-ready
- Review
- Review approved
- Age suitability
- Upper secondary
- Safety
- Use with supervision
- License
- Original content
Simplified educational model. For learning and practice only — not professional-grade medical, engineering, or electrical documentation.
Teacher note: Lab work and flames require teacher supervision.
Last reviewed: 5/1/2026 · Next: Review before embedding external OER figures.
- Simplified educational model. For learning and practice only — not professional-grade medical, engineering, or electrical documentation.
Curriculum alignment
Aligned for classroom support — not official national syllabus certification.
Cameroon · O Level · Chemistry · Combustion · GCE O Level
Cameroon · Anglophone / Francophone schools
O Level · Chemistry · Combustion · GCE O Level
Mapped to common school topics — aligned for classroom support, not official syllabus certification.
International · General STEM
O Level · Chemistry · Combustion
Global STEM foundation support for diagrams and practice.
What you will understand
Combustion releases energy by combining fuel with oxygen.
What you will draw
Fire triangle diagram.
What you will write
Example combustion equation.
Where you will use it
Stoves, engines, and fire safety.
Key vocabulary
- Fuel
- Oxygen
- Exothermic
- Fire triangle
Flow stages
- 1
Fuel + O₂
Inputs.
- 2
Flame products
CO₂ and H₂O out.
Drawing steps
Drawing steps
- Fire triangle fuel/heat/O₂
- Equation under diagram
Application
Formulas
- CH₄ + 2O₂ → CO₂ + 2H₂O (example)
Flow
- Fuel + O₂ → CO₂ + H₂O + energy
Real-life application
- Why must firefighters control oxygen?
Common mistakes
Common mistakes to avoid
- Missing oxygen reactant