****Overall a well planned and carried out experiment which needed a little more depth in the planning section. The inclusion of selected references to inform the plan would be helpful.
Planning was well carried out with a trial experiment. The prediction could be made clearer. If the prediction could be made quantitative ( perhaps by doing some background research) this would be helpful.
Obtaining results: The student carried out a trial experiment and a good range of the independent variable with a fair number of repeats. The student should try to ensure all units and concentrations are clearly recorded.
Analysing Evidence and Evaluation: The graph was not available to view. The student needed to explain the extent to which the conclusion supported the prediction and look at ways of improving the reliability of the evidence. The student has tried to account for the anomalies mentioned but the suggestions for further work are a little limited.