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Investigating the chemical behaviour of metals

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Investigating the chemical behaviour of metals Introduction My aim for the experiment was to investigate and analyse how different metals reacted with water, acid and alkaline. The chemical that I used for the acid was hydrochloric acid, for the alkaline I used sodium hydroxide. The metals that I used for the experiment were: * Zinc * Aluminium * Copper * Iron * Magnesium Another issue I wanted to find out was that which metal would be the most suitable to use for the blade of and ice skate, or which combination of metals would be good for making the blade of an ice skate, using there reactivity towards the different liquids to determine this. As you can see all three skates are different and their blades are different. The first skate is a speed skate and you can see from that angle that it is long. The second one is an ice hockey skate and the third on is a normal ice skate. What will be needed in a blade would be that it would need to be strong and also not to be reactive to the ice, whether it is acid alkaline or water, the ice would usually be water. ...read more.


* Wait for a week and then take your second reading. * And then do the same wait for a week and then take another reading. * Write the results in a table. Results Metal Observation 1 Observation 2 Observation 3 Zn + water No reaction Misty at the bottom. Layer of whit powder as well. White residue on the metal, also on the bottom of the test tube. + acid No reaction Silver layer of powder on the metal. Slight residue in liquid, silver coating has gone. + alkaline No reaction Some residue at the bottom. Some residue at the bottom of the test tube. Al + water No reaction Green residue at the bottom of the test tube. Green residue in water and white residue at the bottom. + acid No reaction All of the metal dissolved, clear solution. Clear solution, metal completely dissolved. + alkaline No reaction Whole metal dissolved, white residue at the top of test tube, orange and black at the bottom. White residue at the top of the test tube, green brown residue at the bottom. ...read more.


Aluminium could have reacted because the outer layer came off and then it reacted, and aluminium is extremely reactive. Evaluation Looking back at the experiment as a whole I think that it was a good experiment. I also feel that the results that I have achieved are fairly accurate. But I do not think that these results would be good enough for the industries. My reason for this is that my tutor commented on my results and said that one or two of them are unusual and the way they have reacted was unusual, this could have been from contamination during the experiment while I might have been away or contamination to the metals before they were handed to me. Another reason for this could be that some of the equipment may not have been sterilised before they were used. If this experiment had been carried out in the industries then maybe the results would have more accurate and the description given by the workers would have been more accurate and more detailed. ?? ?? ?? ?? Paresh Nanji Ms Agyepong Chemicals and metals ...read more.

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