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is a substance formed by the chemical combination of two or more elements in definite proportions
measurement system used to indicate the concentration of hydrogen ionsH+) in solution; ranges from 0 to 14
weak acids or bases that can react with strong acids or bases to prevent sharp, sudden changes in pH
main source of energy for the body. Compounds made up of carbon, hydrogen, and oxygen atoms
very large and complex organic molecules that store and transfer important information in the cell
the process by which one or more substances change to produce one or more different substances
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