Question

Q12. Define the following with an example.
a) Synthesis reaction.
b) Decomposition reaction
c) Variable valency
d) Endothermic reaction
e) Exothermic reaction.​

Answer 1

Answer:

Q12

a) Synthesis reaction or combination reaction is a reaction in which two or more elements or compound combine together to form a single compound.

b) decomposition reaction is a reaction in which a single compound breaks down to give 2or more simple substances.

c)