Elements: Iron, Hydrogen Molecule, Only one type of atom PRESENT, Pure substance of one type of atom, HAS ONLY ONE Chemical symbol, oxygen (O), Na (SODIUM), SULFUR, Chlorine, Aluminum, Copper, Neon, LOCATED ON THE PERIODIC TABLE, Compounds: DIFFERENT SIZES AND COLORS IN MODEL, METHANE, chemically combined, 2 OR MORE DIFFERENT ELEMENTS CHEMICALLY COMBINED, WRITTEN IN A Chemical formula, WATER, Carbon Dioxide, Table Salt, Sugar, Glucose, Ammonia, Nitrogen Oxide,

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