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Chemical elements are made up of atoms. Describe what makes up an atom.
化学元素由原子构成。请描述原子的组成。
What is meant by "atomic number"? How does it differ from "mass number"? Which is the same for all atoms of a given chemical element?
‘原子序数’是什么意思？它与‘质量数’有什么不同？某种化学元素的所有原子的哪一个相同？
What are the distinctive properties of electrons, protons and neutrons? Compare them.
电子、质子和中子有哪些独特的性质？进行比较。
What determines the bounds of the rows of the periodic table of the elements?
Why is it periodic?
元素周期表中各行的界限由什么决定？为什么周期性存在？
Georgia QCC, Grade 6 Standards
佐治亚州第六年级标准
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