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The aim of the investigation is to find out what speeds up or slows down the effects of rusting in iron. To do this I will place Iron in different solutions

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Introduction

What rusts iron quicker? By Loren Macdonald, 10a1 Aims The aim of the investigation is to find out what speeds up or slows down the effects of rusting in iron. To do this I will place Iron in different solutions restricting certain things getting at it to see what it is that rusts the iron the quickest and what prevents it. To do this I will be testing nails with: no water but air, water and air, salt water and air and a magnesium covered nail in water and air. Safety To ensure that this experiment is performed safely everyone doing the experiment should be standing up to avoid spillages. All loose items of clothing and bags should be out of the way to prevent people getting things caught or falling over things. Safety goggles must be worn at all times to ensure that nothing gets into the eye and creates damage to the eye. Equipment Equipment list: * * Test tube (x5) ...read more.

Middle

for each test tube. What will be changed is what the solution/powder is that is added in with the nail and what the nail may be surrounded in. These will be changed so that it can be established what speeds up or slows down rusting. Accuracy The results, to ensure accuracy, to help with averages and to dispel any incorrect results, will be repeated. It will be carried out a total of 3 times especially those that are odd and do not fit in with the others. To make it accurate the liquid is being measured in mm? because it is a more accurate measurement. Prediction I predict that the ones that will rust will be the control and the one with salt water, air and water. The one that has the nail surrounded with magnesium will react in a different way. Magnesium is higher in the reactivity series than iron, and thus is more reactive. Due to this the magnesium will take on the reactions of the iron, and rust, (in sacrificial protection) ...read more.

Conclusion

There were no results that did not fit. If I re-did the experiment I would ensure that the water would boil more in the 'no air' experiment to ensure that absolutely no air got in and it would produce no rust at all as there was a small amount. The one that worked the best was the one containing drying agent. This presented no rust and had the reaction (ie. None) that was expected and was the easiest to tell that it had worked. Conclusion I conclude that without water or oxygen iron will not rust. Also if you place a more reactive metal around the iron nail it will become sacrificial protection and the more reactive metal will take on the rust leaving the iron without rust. Salt, as predicted, worked as a catalyst to speed up the reaction of rusting onto the iron. Therefore to prevent rusting you can coat it in a more reactive metal so that the more reactive metal will take on the rust or you can take away all moisture or oxygen. The things cause rusting are water and oxygen but when salt is added to the mixture it speeds up. ...read more.

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