Substance made of only one kind of atom - element, Two or more elements chemically combined - compound, Chart where all elements are organized into periods and groups according to their properties - periodic table, One or two letter abbreviation for a chemical element - chemical symbol, Can’t be separated by physical means; made of one type of atom or molecule - pure substance, Type of elements that are good conductors of electric current and heat - metals, Type of elements that are brittle when solid, dull, and poor conductors - nonmetals, Type of elements that have properties of both metals and nonmetals - metalloids,

Elements and Compounds

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