The science that treats of matter and energy and of the laws governing their reciprocal interplay under conditions susceptible to precise observation, experimental control, and exact measurement.

Chemistry consists of the study and analysis of substances and matter. It also includes the observation of properties, composition and reactions in relation to the interaction with other energy and matter, such as heat and light.

Biology in essence is one of the biggest areas of science; it deals with the phenomena of living organisms in the environment. It also has many branches within it that specialise including microbiology and cell biology.

chemicals include chemical elements, as well as a large array of compounds such as acids, bases, catalysts, explosives, and fuels.

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