Chemistry is the science of the composition, structure, properties, and reactions of matter, especially of atomic and molecular systems. In chemistry, all concepts are connected somehow. Each formula relates to a theory, which in turn relates to other theories, formulas, ideas, etc. For example the concepts of scientific notation, significant figures, dimensional analysis, molar conversions, and stoichiometry are all tied into one another. Each member in this series would be impossible to accomplish without the preceding concept.
One of the first lessons taught in chemistry is that of scientific notation. It is used to express a number or decimal in a different way. Scien
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