Page 54 - 新思维科学学生用书7 样章
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2.5 Atoms, elements and the Periodic Table
Questions
3 What are the names of the elements with the symbols Mg, Be, Li and N?
4 Find the symbols for the elements aluminium, boron, fluorine and potassium.
5 Which element has atoms with the smallest mass?
6 Which of the elements in the first 20 elements of the Periodic Table has atoms with the greatest
mass?
7 Give the names (not symbols) of two elements in the same period as magnesium.
8 Give the symbols (not names) of two elements in the same group as helium.
Metals and non-metals
The Periodic Table is organised so that elements with similar properties are close together.
In the diagram of the Periodic Table, all the elements that are metals are in yellow boxes. All the
elements that are non-metals are in blue boxes.
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