Answer:
A chemical equation tells the story of a chemical reaction. Reactants are the starting substances in the reaction
while products are the new substances that are formed. The large numbers in front of some of the formulae are
called coefficients. These coefficients are used to balance the equation. Chemical reactions must obey the Law of
Conservation of Matter. The number of atoms of each element on both sides of the equation must be equal because
matter cannot be created or destroyed. When balancing equations, the only numbers that can be changed are
coefficients. Subscripts in a chemical formula cannot be changed to balance an equation.
For Short:
chemical equation, reactants, products, coefficients, balance, conservation, balanced, created, destroyed, coefficients, subscripts
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