chemistry - the study of the composition of matter and the changes that matter undergoes., pure chemistry - chemistry that is concerned with a greater understanding of the theories behind how matter is changing in chemical reactions., theories - broad explanation that is widely accepted because it is supported by a great deal of evidence., experiments - scientific investigation made under controlled conditions to test the validity of a hypothesis., chemical reactions - process that occurs when one or more substances, called reactants, is changed into one or more new substances, called products., Applied chemistry - chemistry that is directed toward a specific practical goal or application., cell - basic unit of structure and function of living things., elements - the simplest form of matter that has a unique set of properties., heredity - the passing of traits from parents to offspring., periodic table - the arrangement of the elements in order of their atomic numbers so that elements with similar properties appear in the same vertical column or group.,

Pure and applied research

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