Print this page out and do the following exercises in your practical book.
How many groups are there in the Periodic Table?
Notice there is a bolded stepped line in the Periodic Table. It divides the elements into two sets.
By looking at the elements at both sides, can you tell that these two sets of elements are?
Can you name 3 properties for each of these element sets?
Which group do the following elements belong to? Magnesium, carbon, Calcium, helium and oxygen
Which of these elements will you expect to behave similarly? Why?