Project 3 - Spot the Reversible Changes in a Kitchen

Last updated at July 13, 2026 by

  • Objective — See physical and chemical changes happening in a busy kitchen.
  • What to do — Spend 30 minutes observing the kitchen at home (with permission). List every change you see.
  • For each change — Decide:
    • Reversible or irreversible?
    • Physical or chemical?
  • Examples to look for — Boiling water (physical, reversible); Kneading dough (physical, reversible); Frying onions (chemical, irreversible); Cooking dal (chemical, irreversible); Dissolving salt (physical, reversible).
  • Reflect — Are there more chemical or physical changes happening in a typical kitchen?
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Maninder Singh

CA Maninder Singh is a Chartered Accountant with 16+ years of practical experience and 20+ years of teaching experience. He teaches Science, Economics, Accounting and English at Teachoo using clear explanations and exam-focused methods students can trust.

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