1. If a questions ask you to draw a diagram, it is important to draw it in pencil.
- Diagrams are always worth 1 or 2 marks
- The key to obtaining the extra mark is to always LABEL the diagram
2. Equations must be balanced and include states
- This is especially important for: Redox, Combustion and Precipitation reactions
- At times you may need to include delta H to show if the reaction is exothermic or endothermic
Eg Haber Process: