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Chemistry Experiment on the Reaction of Different Metals When Exposed to Acid

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Before the experiment, I wrote down a prediction. My hypothesis towards the experiment was that magnesium would have a bigger reaction with the acids. The reactivity of an element depends on its ability to gain or loose electrons which are used for bonding. The more reactive an element, the more easily it will combine with others. From this information, I know that magnesium has a stronger ability to gain or loose electrons which makes the metal more reactive.

I gathered together four different metals and acid compounds which all reacted with one of the elements in the past, for example, Iron Sulphate (FeSO4) contain iron. I prepared equipment I would use for the experiment, such as a pipette to carry the acid in, tweezers to lift the metals in, trays to pour the acids in, etc.

I took an appropriate amount of acid and added in and the tray using the pipette. I then used the tweezers to pick up the metal with and add to the acid. I then observed all the reactions and noted down the effects.

In the experiment, there was a very obvious pattern and many effects on the metals that did react with the acid.
One very obvious pattern in the experiment would be that all the metals did not react with the acid compound that reacted with the same metal in the past, for example, iron did not react with iron sulphate. (Fe + Fe(SO4)2 = Fe + Fe(SO4)2)

Copper is the least reactive metal in the experiment because it is generally low in losing and gaining electrons. This is the main concept of reactivity because if a metal/element is weak in losing and gaining electrons then it is not very reactive, whereas if it is strong, it is more reactive. In all the acids, I observed that copper reacted with nothing.

Iron is the next least re...


... middle of paper ...


... would be good as well because considering there was an odd result, checking would have made it clearer as to whether it was an odd result, or a mistake. That would be my second improvement on the experiment.

In conclusion, I think my test was very reliable and fair. We used four different metals and acids. I used the correct equipment and amount of substances in my experiment and observed everything that happened. I noted down what happened in all the reactions and made it so that I would have a clear understanding of what happened to the metals and acids. From the experiment, I realised that I was right about my prediction of magnesium being the strongest metal, out of the four, to react with the acids. Zinc was second, Iron third, and Copper last, because it didn’t react at all with the acids. The equations shown below are there to help describe the reactions.


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