1. Christopher Whitehead Sixth Form:
A-level Chemistry Summer Bridging Task
DO NOT PRINT OUT - Use this PowerPoint to help
you learn the formulae of
some of the common ions.
There is a document
available on the website that
can be used to make paper
cards.

2. calcium ion
Ca2+

3. aluminium ion
Al3+

4. fluoride ion F-

5. silver ion
Ag+

6. barium ion
Ba2+

7. hydroxide ion
OH-

8. copper (II) ion
Cu2+

9. phosphate ion
PO4 3-

10. lithium ion
Li+

11. iron (II) ion
Fe2+

12. nitrate ion -
NO3

13. ammonium ion
NH4 +

14. bromide ion Br -

15. magnesium ion
Mg2+

16. oxide ion
O2-

17. potassium ion K+

18. sulphate ion
SO4 2-

19. iron (III) ion
Fe3+

20. sodium ion
Na+

21. carbonate ion
CO3 2-

22. chloride ion
Cl-

23. hydrogencarbonate ion-
HCO3

24. hydrogen ion H+

25. ethanoate ion
CH3COO-

26. iodide ion I-

27. cuprous ion or copper (I) ion

28. zinc ion
Zn2+

29. sulfide ion
S2-