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(a) Define chemical reaction. (b) What is a chemical equation? (c) Why do we need to balance chemical equations? |
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Answer» (a) Chemical reaction: Any chemical change in a matter which involves its transformation into one or more new substances is called a chemical reaction. (b) Chemical equation: A chemical equation is the symbolic representation of a chemical reaction using the symbols and the formula of the substances involved in the reaction. (c) A chemical equation needs to be balanced so as to make the number of the atoms of the reactants equal to the number of the atoms of the products. |
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