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How temperature affects the viscosity of oil.

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Introduction

How temperature affects the viscosity of oil.

Aim: The aim of this experiment is to find out what affects the viscosity of oils.

Apparatus: Oil, glue gun, long glass tube, a nail, magnet, stop clock, clamp, protractor, thermometer and kettle.

Plan: To find out the aim there are two variables, which can be considered, they are altering the temperature and using different oils. In this experiment, only temperature will be altered, this is, as different oils will obviously have different viscosity levels. This is as there are different lengths of chain hydrocarbons, the longer the hydrocarbon the more resistance. The oils will have all different amounts of hydrocarbons.

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Middle

Temperature(oC)

1st Time (seconds)

2nd Time (seconds)

3rd Time (seconds)

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Conclusion

Evaluation:  My results are accurate and reliable. The similarity between the results and slight difference between the results support this. For example, on 50oc all 3 times are within 1second of the average. The biggest difference between the highest and lowest out of the 3 times is 3.2 seconds, which is not a huge difference. This evidence is sufficient enough to support my conclusion that when the temperature is increased the viscosity of oil decreases as there is lees resistance as the particles have loosened. If the experiment was done again different types of oil would be tested, this is too see which oils have longer hydrocarbon chains form less resistance quicker as the temperature increases.

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This student written piece of work is one of many that can be found in our GCSE Electricity and Magnetism section.

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