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Biological catalysts

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a substance that speeds up the rate of a chemical reaction without being consumed by the reaction

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energy that is needed to get a reaction started

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the elements or compounds produced by a chemical reaction

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elements or compounds that engage in a chemical reaction

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a process that changes, or transform, one set of compounds into another

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compounds with a amino group

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macromolecules containing nitrogen as well as carbon, hydrogen, and oxygen

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polymers assembled from nucleotides

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monomers that consist of three components

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mostly made from carbon and hydrogen atoms

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made up of carbon, hydrogen, and oxygen atoms

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Joined together with monomers

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Smaller units

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a measurement system to indicate the concentration oh H+ ions in solution

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mixtures and undissolved material

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Substance that is dissolved

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substance in which the solute dissolves

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Type of mixture

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material composed of two or more elements or compounds that are physically mixed together but not chemically combined

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the attraction between molecules of different substances

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the attraction between molecules of the same substance

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attraction between a hydrogen atom with a partial positive charge and another atom with a partial charge

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forces attraction between molecules

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The structure that results when atoms are joined together by covalent bonds

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positively  and negatively charged Atoms

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moving electrons that travel about the nuclei of both atoms

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formed when one or more electrons are transferred from one atom to another

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substance formed by the chemical combination of two or more elements in definite proportions

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atoms in the same element that differ in the number of neutrons they contain

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pure substance that consists entirely of one type of atom

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Negatively charged particle

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Center of an atom

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the study of chemistry begins with the basic unit of matter