Science- Changes Around Us

Raw egg to boiled egg ✘ Wet clothes to dry clothes ✘ Bud to flower ✘ Cow dung to biogas ✔

Milk to paneer ✘ Cold milk to hot milk ✘ Yam to knitted sweater ✘ Wet clothes to dry clothes ✔

heating metal rim ✘ heating wooden wheel ✘ cooling metal rim ✘ cooling wooden wheel ✔

expands ✘ contracts ✘ depends how much it is heated ✘ depends as the type of meted ✔

Melting of solid wax ✘ liquid wax changes into vapours ✘ Wax vapour bums into flame ✘ All of these ✔

Heating a substance ✘ Cooling a substance ✘ Mixing a substance with another substance ✘ All of these ✔

slow change ✘ fast change ✘ reversible change ✘ physical change ✔

evaporation ✘ melting ✘ condensation ✘ freezing ✔

Change of day and night ✘ Burning of fuels ✘ Drying of clothes ✘ Tearing of paper ✔

Evaporation of water ✘ Burning of fuels ✘ Moving of a wheel ✘ Breaking of a brick ✔