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Trường nội trú tốt nhất khu vực tphcm Fundamentals Explained

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A material that only consists of just one type or class of atom is alleged to generally be an element. As it can't be altered through physical or chemical signifies to stop working or build new substances, a component is a pure content. Virtually all elements are metals, nonmetals, or https://tuckerl999nzm4.wikistatement.com/user

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