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Do we get the highest voltage by combining the highest and lowest reactive metals?

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Do we get the highest voltage by combining the highest and lowest reactive metals? Introduction. Atoms are the basis of chemistry; they are the building blocks for everything in the Universe. Atoms of hydrogen are the simplest and lightest, and atoms of uranium are the heaviest that occur naturally. All atoms consist of a central core called the nucleus, which possesses a certain number of protons and neutrons of positive charge surrounded by a cloud of electrons, each of which has unit negative charge. Their total negative charge is exactly equal to the positive charge on the nucleus; hence the atom as a whole is electrically neutral. Theory. To understand this experiment the reactivity series has to be introduced, this list of metals shows how reactive each individual metal is to certain circumstances (e.g.: How well sodium reacts to water, or air) ...read more.


This means that Un-reactive metals are not so generous at allowing the electrons to flow, therefore it will only receive electrons from a more reactive metal. Method and Apparatus. * Set up equipment as shown * Making sure voltmeter is attached to both metals. Read voltage from voltmeter and record data. * Repeat steps above, using new water, to gather a sensible average. Safety and Fair testing. Safety equipment supplied (safety goggles, etc) must be worn at all times, following all correct procedures as explained in the school labs. To ensure that the experiment is fair and accurate, repeat the experiment a number of times ensuring that on each of these occasions you use equal and correct measurements. Metal Reading from volt meter Iron 0.3 Zinc 0.8 Aluminium 0.66 Magnesium 1.31 Conclusion After conducting the experiment I was able to compile to following results, which are displayed in the chart above. ...read more.


These findings support my prediction and demonstrate that the atom theory, as explained earlier, is correct. Evaluation The experiment was carried out successfully and produced the predicted results, great care was taken to ensure that the accuracy of the readings from the volt meter were correctly recorded, to verify the readings were accurate the experiment was conducted 6 times, to avoid any anomalies, this was greatly assisted by the simplicity of the experiment. Should this experiment be repeated certain adjustments could be introduced to see if the results would be affected. For example, the level of water in the beaker could be varied, along with the type of liquid used (e.g. a form of acid) to see if this produced differing results. Also the size of metals could be increased/decreased to check an affect on the outcome. It would also be interesting to see if the temperature of the liquid used in the experiment has any affect on the results. Daniel McNally The Commonweal School page1 ...read more.

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