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If you know the basic SI Units and derived units, are familiar with the prefixes for scientific quantities, and are able to perform calculation involving concentration and energy, then please click Chem120 Quizzes to start the quiz. Otherwise, click the links above or the topics on the Menu to review.

All measures involve numbers and units. Scientific quantities are expressed in numbers and units, both are required to express any quantity. Thus, the ability to use SI units is essential.

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