Question

Define the following terms :-
a) chemical change
b) chemical bond
c) Effervescene
d) Precipitate​

Answer 1

Answer:

a) A change in which new substances are formed and which cannot be reversed by reversing the conditions is called a chemical change.

b)The attraction between atoms and molecules.

c)When gas bubbles are formed,usually due to a reaction that phenomenon is called effervescence.

d)A solid that separates usually when two solutions are mixed with each other is precipitate.