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5.Which type of change takes place in the following and state whether the energy is evolved or absorbed during the change?Burning of a candle, lightening of a bulb, preparation of food by green plants, volcanic eruption, evaporation of petrol, burning of LPG. |
| Answer» BURNING of a candle CHEMICAL change as well as physical change and energy evolved. Lightning of a BULB Physical change, energy evolved.10-Jun-2019Physical change is EASILY reversible: Chemical change is irreversiblePhysical change: Chemical changeNo new substance is formed: New substance is formedIt is a temporary change: It is a permanent change | |