1. Key words and definitions

2. As long as your starting and finishing points are the same, the enthalpy change will always be the same. This is regardless of how you go from start to finish Key word(s) ?

3. Skeletal formula Definition ?

4. Unsaturated Definition ?

5. This shows how all the atoms in a molecule bond to each other Key word(s) ?

6. The sound which comes from an engine if auto- ignition occurs Key word(s) ?

7. Definition ?  298 K (25 o C) for temperature  1 atmosphere for pressure  1 mol dm -3 for concentrations of solutions

8. Definition ? Homologous series

9. Key word(s) ? This is the energy required to pull the atoms bonded in a gaseous compound apart e.g. H 2 (g)  2H(g). This is always positive

10. Definition ? HCHC