Task 1:study the periodic table of elements as shown in the diagram above.write twenty elements and their symbols in your notebook.
elements
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
penge pong answers and symbols,science po 'yan