Question

1. (a) Define chemical reaction.
(b) What is a chemical equation ?
(c) Why do we need to balance chemical equations?​

Answer 1

Answer:

(c) Chemical reactions follow the law of conservation of mass. Chemical equations show this conservation, or equality, in terms of atoms. You have to balance the equation to make the number of atoms equal on each side of an equation...

(b)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.

(a) A process in which one or more substances, the reactants, are converted to one or more different substances, the products. ... Substances are either chemical elements or compounds.