type of mattar (on the basic of chemical composition)
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https://www.thoughtco.com/definition-of-matter-and-examples-604565
What Is Matter? Definition in Chemistry - ThoughtCo
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Matter can also be classified by its chemical composition. An element is a pure substance made up of atoms with the same number of protons. As of 2011, 118 elements have been observed, 92 of which occur naturally. Carbon (C), Oxygen (O), Hydrogen (H) are examples of elements.
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