Worksheet the periodic table.pdf

The periodic table

1. The Periodic Table
14/10/2022

2. Substances can be classified as elements or
compounds.
•An elementis
________________________________________________________
•A compoundis
________________________________________________________

3. In the Periodic Table:
•the elements are
arranged in order of
________________________
________________________
•the vertical columns
of elements with
similar properties are
called _________________
•the horizontal rows
are called ______________

4. Complete the blanks below!

5. Practice to find out the position of elements in the periodic table
1.

6. Practice to find out the position of elements in the periodic table
2.
K
39
19

7. Practice to find out the position of elements in the periodic table
3.
Ar
40
18

8. Practice to find out the position of elements in the periodic table
4.
O
16
8

9. Practice to find out the position of elements in the periodic table
5.
Si
28
14

10. Practice to find out the position of elements in the periodic table
6.
Ba
11
5 Al
27
13 Ga
70
31 In
115
49

11. Practice to find out the position of elements in the periodic table
7.
Na
11
5 Al
27
13Mg
24
12

12. Find out the position of each element
in the periodic table!
8.The following is a list of the electron
distributions of unknown elements.
Answer:

13. 9.

15. 10.