Student Copy 8 IPA_CS - Atoms into ions.pptx

atoms into ions

1. IONISASI ATOMS INTO IONS

2. How do atoms become ions? Do now: Draw the electronic structures of: Period 2: Li +1 ,Be, C, O -2 Period 3: Na, Mg +2 , S, Cl -1 What do you notice?

3. Losing electrons to form positive ions Na Na 2,8,1 + [ 2,8 ] + Outermost shell only drawn

4. Gaining electrons to form negative ions Outermost shell only drawn Cl Cl 2,8,7 - [2,8,8] -

5. Transfer of electrons

6. Drawing ions Apply what you have just learnt about sodium chloride to other ionic compounds. Group 1 elements lose 1 electron Group 2 elements lose 2 electrons Group 6 elements gain 2 electrons Group 7 elements gain 1 electron EXTENSION TASK : ON THE DIAGRAMS YOU HAVE DRAWN, WRITE THE ELECTRON CONFIGURATIONS FOR THE ATOMS AND THE IONS.

7. GAIN? LOSE?

8. LOSE 2 ELECTRONS

9. GAIN? LOSE?

10. GAIN 2 ELECTRONS

11. GAIN? LOSE?

12. GAIN 1 ELECTRON

13. GAIN? LOSE?

14. GAIN 3 ELECTRONS

15. GAIN? LOSE?

16. LOSE 3 ELECTRONS

17. GAIN? LOSE?

18. LOSE 1 ELECTRON

19. Work in pair to c omplete the worksheet