Oil and Water Essay Example

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Oil and Water

Science: Oil and Water

Question I: What happens when oil is poured into water?

When oil is poured into water, it floats and forms a circular patch on the surface of water. There are a number of reasons why oil behaves in such a manner on the surface of water. Oil floats on water because the two liquids are immiscible. This makes them not to mix. In addition, oil floats on water because it less dense than water. The two properties, density and immiscibility make oil to float. The formation of a circular patch by oil is because of the surface tension. The surface tension of oil is less than that of. This makes the surface tension of water to stretch out the oil drop into a circular patch.

r molecules), based on these observations? Justify your answer. non-pola or polarWhat can you infer about the nature of the dye particles with regard to their polarity (i.e. are they  We added two dyes to the oil/water flask. One dye colored the water and the other dye colored the oil.Question II:

The dye that colored water is made up of polar molecules while the one that colored oil is made of non-polar molecules. Water is a polar liquid in the sense that the water molecule is made up of a slightly positive part and slightly negative part. The bond between the hydrogen and oxygen atoms is the hydrogen bond. The hydrogen atoms in the water molecule are slightly positive while the oxygen atom is slightly negative. This is because during the formation of the water molecule, oxygen pulls the hydrogen electron more to itself though not totally. This makes it slightly negative while the hydrogen atoms become slightly positive. This therefore makes water to dissolve substances that are ionic or polar only. Non-polar substances like oil cannot mix with water. As for oil, oil is a non-polar liquid and therefore cannot mix with polar substances. This therefore implies that only the polar dye could mix with water while the non-polar dye to mix with oil.

What are enzymes and why is homeostasis of body temperature and the pH of body fluids important for enzyme function in humans?Question III:

Enzymes are proteins that act as catalysts which regulate the cell activity in the body. Homeostasis is the regulation of the internal environment of the body so that it remains constant despite changes in the external environment. Homeostasis of the body temperature of body fluids is crucial to the functioning of enzymes in the sense that enzymes operate within a certain optimum temperature. When temperatures in the body are very low, the enzyme activity becomes very slow. This is because at very low temperatures, enzymes are deactivated. This makes them to carry out very little or no activity. When temperatures in the body increase, the enzyme activity in the body increases. However, when the temperatures become too high, the enzyme activity stops. This is because at very high temperatures, enzymes are destroyed and become denatured. This makes them unable to act on the food substrates. This therefore makes homeostasis a very important process because it regulates the body temperature making it favorable for the functioning of enzymes. Different enzymes operate in different PH environments. There are those which operate well in acidic conditions while there are others which operate well in alkaline conditions. An enzyme that favors acidic conditions becomes inactive when taken to alkaline conditions. Likewise, an enzyme that favors alkaline conditions cannot work under acidic conditions. These environments therefore need to be maintained. Homeostasis maintains these environments ensuring maximum activity of enzymes. This ensures that all body functions take place properly because the cell activities that require the help of enzymes take place optimally.