The viscosity of syrup Essay Example for Free

The viscosity of syrup EssayC intervals. The results atomic number 18 shown below in table and graph form. Time (s) Temperature (m) Speed (m/s) As I expected, the jar rolled faster at higher temperatures and bumper-to-bumper at lower temperatures. At 0i C, the syrup was solid across one side of the jar. At this block the jar would not roll at all (this result is not shown on the graph so as not to effect the line of best fit). This was again beca design of the centre of gravity and the affect it has on the turning force. As the syrup cannot flow the centre of gravity settles directly above the contact focalize of the slope and the jar and will not move. The speedy the mass changes from one side of the jar to other the quicker the jar will role down the slope. This is shown in the diagram below. The Boltzmann Factor The Boltzmann factor explains why the syrup flows quicker when warmer. It tells us that if a molecule is given enough cipher (in this case by the heat zippo) then it can belch free from its surrounding molecules and flow. The more energy the flame gives the molecules the quicker they can flow into new positions.The formula for this is E/kT where E is the activation energy required to break the bonds between two molecules and kT is a constant (k)(depending on the liquid) and T the temperature in Kelvins. The formula shows that if kT is greater than E then the liquid will flow. As we do not know the constant we cannot work protrude the activation energy. scorn this the results still show that this is what is happening. This is relevant to this experimentation as the higher the temperature the more energy the molecules will flow, so the syrup will flow easier.Anomalies There were many places in my experiment where errors could return occurred. For example, when measuring the temperature of the syrup I removed some that was stuck to the thermometer. I scraped of as much as possible, entirely still some remained on the thermometer. Bec ause of this I think my results argon accurate to the nearest gram of syrup. The two most obvious places where inaccuracies could have occurred were, the constantly changing temperature and timing using my reactions. I think that these inaccuracies are minor and did not affect the results of the experiment in an important way.The results that I feel show this are the 64 and 66i C results where the jar appears to go faster as the temperature decreases. Because of this I have decided to terminate these results. Another major inaccuracy is in the grains of the slope, as it was not perfectly smooth. I think that although the grains may have slowed the jar down at some points, the jar then accelerated rapidly after this, so the average speed was about the aforementioned(prenominal). However I cannot prove this so I will retroflex some of the experiment on a metallic surface to see if I get the same results.Repeat To repeat the experiment I shall use a metallic runway to stop skirmish from the slope affecting my results. Having one some preliminary rolls, I realised that the slope I was using, which was gauze-like than the other slope, meant that the jar repeatedly got jammed against the edges. I therefore decided to roll the jar 20cm, and use average velocities to compare my original results with my new results. I also decided to only repeat the experiment between 30-50i C, as these seemed a particular place of interest in the experiment.My results from the repeats are shown below. Conclusion Despite these errors I still feel my results are/Are not accurate (I will repeat exp. utilise metallic surface. The points between 30-50i C Show a clear change from a low f number to a high velocity. I therefore concluded that this is comparable to activation energy. Activation energy is where a molecule has enough energy to perform a reaction. In this case the molecules have enough energy to change state from a very pasty liquid to a much less viscous liquid.