Question

what is chemmical equation and also an example

Answer 1

OK
A chemical equation is a method of expressing the reaction between various chemical elements.

A very simple example is the reaction between hydrogen and oxygen to produce water:

2H2 + O2 = 2H2O

Answer 2

A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side.....
Example H2O - H2 + O