A material that only has just one sort or class of atom is alleged being an element. As it cannot be altered by way of Bodily or chemical usually means to stop working or develop new substances, an element is often a pure product. Nearly all aspects are metals, nonmetals, https://cactruongnoitrunhatotphcm22222.designertoblog.com/67520527/the-single-best-strategy-to-use-for-các-trường-nội-trú-nhất-ơ-tphcm