Lab Report on
Displacement Reactions of Metals
- Hypothesis
I can predict that a more reactive metal will displace a less reactive metal from its salts. To predict the displacement, I have applied the knowledge of reactivity and this is my prediction:
Copper Magnesium
Iron Zinc
Magnesium Iron
Zinc Copper
Magnesium will displace zinc, iron and copper as it is a very reactive metal. Zinc will displace iron and copper but not magnesium as magnesium is more reactive. Iron will displace copper only as it is a less reactive metal. And copper will not be able to displace any metals because it is a very weak metal.
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Peer Reviews
Here's what a star student thought of this essay
Quality of writing
Spelling, punctuation and grammar okay, with no little to no mistakes seen. Could be a bit clearer in the presentation of results.
Level of analysis
Level of analysis could be deeper, adequate for the middle scale of this level and the understanding of displacement reactions and redox is clearly shown but I would like to see more detailed scientific analysis throughout. Could display additional skills such as graphs, or adding an evaluation of the experiment.
Response to question
Overall conclusion and body of the text are set out adequately for this level of qualification, but I would like to see the science of redox reactions explained more in the introduction. The introduction is set out okay but lacks the detailed scientific knowledge that I would like to see for this level. Main body and method are set out okay, with observations and the method noted clearly. In the main body I would like the student to explain why there was no reaction seen in certain instances, as this is due to no displacement of metals but the author does not demonstrate this simple fact. Conclusion is set out okay with a good equation to finish although I would like to see them use more examples from the main body of their coursework to support their conclusions, also could be worded slightly clearer.