Is iron an element, compound, solution or heterogeneous mixture?

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Iron is an element and not a compound or a heterogeneous mixture or a solution. An element is characterized by atoms of exactly the same properties, that is, an element is made up of exactly the same atoms. Iron is composed of iron atoms. A compound is made up of...

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Iron is an element and not a compound or a heterogeneous mixture or a solution. An element is characterized by atoms of exactly the same properties, that is, an element is made up of exactly the same atoms. Iron is composed of iron atoms. A compound is made up of two or more different elements and has characteristics that are different from the constituent elements. Iron does not have any other element combined with it and hence is not a compound. A solution is made of a solute dissolved in a solvent. An example is sugar solution, that is, sugar dissolved in water. Iron is not dissolved in anything and hence is not a solution. A heterogeneous mixture is made up of constituents with localized regions of differing properties. Iron has uniform properties throughout a piece (of any size) of metal and hence is not a heterogeneous mixture. 

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