1. The 7 Diatomic Molecules

2. HydrogenH H 2 NitrogenN N 2 OxygenO O 2 FluorineF F 2

3. ChlorineCl Cl 2 BromineBr Br 2 IodineI I 2

4. hydrogen + oxygen  water H 2 + O 2  H 2 O

5. hydrogen + oxygen  water 2H 2 + O 2  2 H 2 O

6. Carbon + Hydrogen  acetylene C + H 2  C 2 H 2

7. Carbon + Hydrogen  acetylene 2C + H 2  C 2 H 2

8. Magnesium + Oxygen  magnesium oxide Mg + O 2  MgO

9. Magnesium + Oxygen  magnesium oxide 2Mg + O 2  2MgO

10. Copper + chlorine  copper chloride Cu + Cl 2  CuCl 4

11. Copper + chlorine  copper chloride Cu + 2Cl 2  CuCl 4

12. aluminum + oxygen  aluminum oxide Al + O 2  Al 2 O 3

13. aluminum + oxygen  aluminum oxide 4Al + 3O 2  2 Al 2 O 3

14. potassium chloride + oxygen  potassium chlorate KCl + O 2  KClO 3

15. potassium chloride + oxygen  potassium chlorate 2KClO 3  2KCl + 3O 2