atom - basic unit of matter, compound - substance formed by the combination of two or more elements, solvent - the substance that dissolves another substance, acid - component the releases H+ ions, covalent bond - bond formed when two atoms share electron, element - pure substance that consists entirely of one type of atom, enzyme - biological catalyst, nucleus - center of the atom,filled with protons and neutrons, base - components that produce OH- ions, monomer - small subunits of larger substances, ionic bond - bond created when electrons are transferred from one atom to another, catalyst - substance that speeds up a chemical reaction, polymer - large substances that is made up of linked together Monomers, solution - type of mixture in which all components are evenly distributed, mixture - material composed of two or more elements physically put together,NOT chemically, electron - negatively charged particle, solute - the substance that IS DISSOLVED in another substance,

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