Principles Of Chemistry - The Periodic Table

Question 1

What do elements of the same group have in common?

Answer 1

Same number of electrons in their outer shell

Question 2

Which elements conduct electricity?

Answer 2

Metals generally conduct electricity, non metals (except graphite) generally don’t conduct electricity

Question 3

Identify an element as a metal or a non metal according to it’s position in the periodic table

Answer 3

Metals;

• react to form positive ions
• majority of elements are metals
• found at the left and bottom of the periodic table

Non Metals;

• elements that do not form positive ions
• found towards the right of the periodic table

Question 4

What does the period number tell us?

Answer 4

Gives the number of electron shells