1. Please click to start interactive Periodic Table Tutorial The Periodic Table Click on a group number or a coloured section of the table

2. The Periodic Table The Alkali metals Forms an Alkali when it reacts with water 1 Electron in outer shell Soft metal, easily cut Very reactive Group 1

3. The Periodic Table The Alkali-Earth metals Forms an Alkali when it reacts with water 2 Electrons in outer shell Metal is harder, but easily deformed Less reactive than Group 1 Group 2

4. The Periodic Table Can be poisonous, but still quite reactive 3 Electrons in outer shell Metal is harder, but easily deformed Contains a Semi-metal Group 3

5. The Periodic Table Can be poisonous, but much less reactive than group 3 4 Electrons in outer shell Metal is harder, but easily deformed Contains a Semi-metal Group 4

6. The Periodic Table Contains the first gas 5 Electrons in outer shell Metal is soft, with low melting points Contains a Semi-metal Group 5

7. The Periodic Table Contains Oxygen 6 Electrons in outer shell Metal is soft, some non-metals Contains a Semi-metal Group 6

8. The Periodic Table The Halogens All gases, extremely hazardous to health 7 Electrons in outer shell Poisonous but used in both war and medicine Very reactive Group 7

9. The Periodic Table The Inert Gases All gases 8 Electrons in outer shell All of these gases do not react Extremely useful Group 8

10. The Periodic Table H Li Na K These are the only four of the ALKALI metal that you will need to be aware of. Hydrogen isn’t actually a metal, but it is the most simple element that exists. It is in group one. It has 1 electron in its outer shell. It only has one electron in total so it’s atomic number is 1 The rest are: Lithium3 Sodium11 Potassium19

11. The Periodic Table Be Mg Ca The Alkali-Earth metals are in Group 2. They are less reactive than Group 1. Beryllium is in Period 2. This means that is has 2 shells. Magnesium 3 etc. Group 2 atoms have two electrons in the outer shell. The atomic number of beryllium is 4. The rest are Magnesium 12 Calcium20

12. The Periodic Table Transitional Metals These elements are all metals. They have similar properties. A lot of these metals are very familiar to most people. Elements such as Iron, Gold, Silver and Copper are found here. They are often used as CATALYSTS. This means that they can speed up a chemical reaction a lower temperature FeCu Au Ag

13. The Periodic Table This part of the periodic Table is one of the most interesting It contains three types of element. It contains metals and two types of non-metal. The first is the traditional non-metal, with the reactive gases. The dark line shows the transition. The other non-metals are called Semi-Metals. They display similar properties to both metal and non-metal. They lay along the dark line. OC AlSi

14. The Periodic Table F Cl The Halogens are in Group 7. They only need to gain 1 electron to complete their shells Because they only need one they find it easy and so are more reactive. This is the opposite of Group 1. Group 1 only need to lose 1 electron. If Sodium lost its single electron to Chlorine both would have full shells Fluorine9 Chlorine17

15. The Periodic Table Ne Ar The Inert gases have a full outer shell, so they were put in Group 8. As they don’t need any electrons they will not react with anything else. This unwillingness to react makes them extremely useful. Argon and Neon are used for lighting as they will not allow burning. Helium2 Neon10 Argon18 He