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AP Biology: Chemistry

Terms : Hide Images
168732597elementa substance that cannot be broken down into any other substances
168732598electron clouda three-dimensional space that electrons travel freely
168732599covalent bonda bond that is formed when atoms share electrons
168732600moleculetwo or more atoms held together by shared electrons
168732601ionscharged atoms
168732602ionic bonda bond in which positive and negative ions are attracted to each other
168732603acida chemical that donates protons when dissolved in water
168732604basea chemical that accepts protons (H+ ions) when dissolved in water
168732605catalysta substance that changes the speed of a reaction without being affected itself
168732606nucleotidea monomer that forms nucleic acid

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