"ATOM", "The smallest portion of an element found in the periodic; examples include carbon, oxygen, gold" "Biomolecule", "an organic molecule produced by a living organism" "Chemical bond", "a connection made between atoms when electrons are attracted, shared, or transferred" "Condensation reaction", "a chemical reaction that combines smaller molecules and forms water as a byproduct; the reaction is often used to form polymers" "Covalent bond", "a chemical bond formed when elements share electrons"
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