a pure substance formed by a chemical reaction of two or more different elements on a fixed ratio
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A compound is a substance formed when two or more chemical elements are chemically bonded together. Two types of chemical bonds common in compounds are covalent and ionic bonds. The elements combine together in fixed ratio.
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A PURE SUBSTANCE IS THAT WHICH IS JUST MADE UP OF ONE ELEMENT
PLEASE MARK IT AS BRAINLIEST
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