| Reversible changes | Irreversible changes |
| (1) Glowing of electric bulb(It glows when switched on and becomes dark when switched ***) | (1) Burning of paper or wood. (it gives smoke & ash, which cannot form paper or wood again. |
| (2) Distillation of liquid | (2) Rusting of iron (Rust cannot be changed into iron again) |
| (3) Sublimation | (3) Making of curd from milk |
| (4) Collapsing of mimosa(touch me not plants) | (4) Growth of plants and animals. |
