element is a substance that cannot be broken down into simpler components by any non-nuclear chemical reaction. An element is uniquely determined by the number of protons in the nuclei of its atoms.
compound something formed by a union of elements or parts especially : a distinct substance formed by chemical union of two or more ingredients in definite proportion by weight a new antibiotic compound.
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element is a substance that cannot be broken down into simpler components by any non-nuclear chemical reaction. An element is uniquely determined by the number of protons in the nuclei of its atoms.
compound something formed by a union of elements or parts especially : a distinct substance formed by chemical union of two or more ingredients in definite proportion by weight a new antibiotic compound.