送交者: JZ 于 2010-10-30, 22:57:04:
回答: 我现在怀疑国内化学教育把元素和单质分得这么清楚可能是受俄国的影响 由 JZ 于 2010-10-30, 22:22:07:
A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, which is the number of protons in its nucleus.
把元素直接和物质挂钩