英语翻译elements are substances made up of only one kind of atom

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英语翻译
elements are substances made up of only one kind of atom.atoms of an element all contain the same number of protons.elements can be classified according to the particles they are made up frpm.elements can be classified by there state (or phase )at room temperature.the state means whether the element is a solid.liquid or gas.
substances which contain different elements are either mixtures or compounds.
最好不要用翻译器.（现在我馍有财富值了.赚够多少一定全部抛出感谢）
话是这样讲可我晕了。书上说element 是由一种atom组成的然后有的atom连接在一起成为了molecule 就是说 element是由一种atom 或者molecule组成的吗？那像air和nitrigen dioxide那些东西是不是不是mixture就是compound?

元素是指由同一种原子构成的物质.一种元素中的所有原子都包含有相同数量的质子.元素就是
根据其基本粒子的组成来定义的.另一种定义方式是根据该元素在室温下处于什么状态来决定的.所谓状态是指其处于固态,液态还是气态.
由不同元素组成的物质,叫做混合物,或者是化合物

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