Question

State the kind of chemical reaction in the following example in term of loss and gain of energy_
1.digestion of food in stomach
2.combination of coal in air 3.heating of limestone

Answer 1

Answer:

1. In digestion a complex molecule is broken down into simple molecule. So it is decomposition reaction.

2.During burning of coal heat us released . So it is exothermic decomposition reaction.

3. In this Lime stone breaking into simpler compounds by heating it. So it thermal decomposition.