Show more: Selection & objects
H₂O molecule
Formula & writing · Guest drawings are saved only on this device. Sign in to sync drawings across devices.
AI Coach on
Size5
Write the formula clearly. Use subscript for chemical symbols.
Tool: PenSize: 5pxZoom: 100%Guest drawings are saved only on this device. Sign in to sync drawings across devices.
Saved drawings (0)
No saved drawings yet. Tap Save on the canvas to keep your work in this browser.
Lesson details & full guide
Diagram pack: Combustion Reaction
Stage 1/2: Fuel + O₂
Vocabulary to include
- Fuel
- Oxygen
- Carbon dioxide
- Water
Drawing steps
- Fire triangle fuel/heat/O₂
- Equation under diagram
Formulas
- CH₄ + 2O₂ → CO₂ + 2H₂O (example)
Flow
- Fuel + O₂ → CO₂ + H₂O + energy
Real-life application
- Why must firefighters control oxygen?
Common mistakes to avoid
- Missing oxygen reactant
Safety: Simplified educational model. For learning and practice only — not professional-grade medical, engineering, or electrical documentation.
Drawing steps
- Draw oxygen as larger circle.
- Add two H atoms at an angle (not straight).
- Show two lone pairs on oxygen.
- Label bond angle approximately 104.5°.
Progress
Not started yet — start practicing to begin tracking.
Workspace mode
Saved on this device. Sign in to sync when your school enables cloud.