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  Element Compound Mixture
It is made of two or more different kinds of atoms.      
It is made of one kind of atom.      
It is made of two or more different kinds of substances.      
It is a pure substance.      
It is not chemically combined.      
Each part of it keeps its own chemical identity.      
It can only be separated chemically.      
It is represented by chemical symbols.      
It is represented by chemical formulas.      
It has a specific ratio of elements.