Question

Write Characteristics Of Chemical Reactions

Answer 1

Answer: The Characteristics of Chemical Reactions are:

i. They are permanent by nature and are not temporary.

ii. They are impossible to be reversed using simple physical methods like: evaporation.

iii. They produce new substances.

iv. The new substances produced by them have completely different properties than that of their reactants.

v. They either emit or absorb a lot of heat and can be characterised as Exothermic or Endothermic.

vii. A colour change occurs.

viii. A precipitate or gas evolves.

Answer 2

Answer:

The characteristics of a chemical reaction are :

Evolution of gas.

Formation of a precipitate.

Change in color. ..

Formation of new substances.