Formula deep page
Rusting (simplified)
Iron + Oxygen + Water → Iron Oxide (rust)
This formula belongs to the chapter "Physical and Chemical Changes" in Class 7 Science. Use it after identifying the right variables, matching the chapter context, and writing the substitution clearly.
How to use it
- Identify the quantity you need to find.
- Check the related variables and units from the question.
- Substitute values carefully into the formula.
- Simplify step by step and write the final statement.
Worked cue
4Fe + 3O₂ + 6H₂O → 4Fe(OH)₃ → Fe₂O₃ (rust)