Question

Observe following chemical changes occurring around us in daily life and identify type of reaction in each:-
•Burning of candle gives carbon dioxide
•During whitewashing when quicklime is added to water, drum becomes warm.
•Digestion of food gives energy ​

Answer 1

Answer:

1 . Chemical change by invitation of wax

2 . because hydrogen is released

3. physical change as it is changed in amino acids and other simpler chemicals