a) Define chemical reaction.
b) What is a chemical equation?
(c) Why do we need to balance chemical equations?
Answers
Answer:
a) Chemical reaction involves the breaking of chemical bonds between the atoms or groups of atoms of reacting substances and rearrangement of atoms making new bonds to form new substances.
b) A chemical equation is a symbolic representation of chemical reaction in the form of symbols and formulae , wherein the reactant's entities are on the left-hand side of the (=) sign and the product entities are on the right hand side of the (=) sign .
c) The chemical equation needs to be balanced so that it follows the law of conservation of mass. A balanced chemical equation occurs when the number of the different atoms of elements in the reactants side is equal to that of the products side. Balancing chemical equations is a process of trial and error.
Explanation:
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Simple and proper answer...
(a) Chemical reaction :- A process in which one or more substances, the reactants, are converted to one or more different substances, the products.
(b) Chemical equation :- A chemical equation is a 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.
(c)The chemical equation needs to be balanced so that it follows the law of conservation of mass. A balanced chemical equation occurs when the number of the different atoms of elements in the reactants side is equal to that of the products side. Balancing chemical equations is a process of trial and error.