Do all liquids diffuse in the same way? Purpose:
The purpose of this experiment was to find out if all liquids diffuse in the same way.
Hypothesis:
If different liquids diffuse, then the process will not be the same because liquids are made up of different molecules, with different densities, the diffusion will take longer/shorter than others.
Materials:
1 plastic dropper with rubber top (medicine dropper)
3 glass beakers (400mL)
1 graduated cylinder (500mL)
4 drops of red food coloring
4 drops of vegetable cooking oil
300 mL of water times 2
1 teabag of orange pekoe
Electric kettle (to boil water)
300 mL of boiling water
Variables:
Independent Variable; the liquids poured into the water (teabag, oil, food coloring) …show more content…
As we dropped the first drop of oil into the water, it formed a small circle and sat on the surface, as it slowly drifted at the top the water. The second drop did so as well, but the two drops seemed to be attracted to each other, almost how a magnets would. With the third drop, the second and third drops quickly morphed together to form a larger circle. Right after, the first drop joined together (this reminded me of how smaller molecules and particles might enter through the cell membrane). Then, the fourth and fifth drop joined, and the two circles then merged to form the largest circle of oil. The new drop of oil sat atop the middle of the water but moved ever so …show more content…
However, like every scenario, there is always something that goes wrong or something that you would be willing to change to make the experiment more outstanding. In this case, the first thing I would have done differently would be the filming angle. For the food coloring experiment, we did not film what was going on from the top of the beaker; instead, we filmed in from the side angle only. However, we did use both points of views for the other two experiments which proved to be quite useful.
Furthermore, we filmed the food coloring experiment from the side view, but from the wrong angle. Consequently, it is harder to see what is going on inside the beaker because the measurements on the side are somewhat in the way. Lastly, we learned that we should've put a white sheet of paper behind the beaker while filming so the light doesn’t mess around with the water and so there wouldn't be refraction of light. Unfortunately, we learned to do that after we filmed the food coloring.