1. What was the chemical composition of the pellet that softenned in acetone in Part 1?
Why is this material soluble in acetone and not water? Be sure to cite any sources. Hint:
Your answer should include the terms “po
...
1. What was the chemical composition of the pellet that softenned in acetone in Part 1?
Why is this material soluble in acetone and not water? Be sure to cite any sources. Hint:
Your answer should include the terms “polar” and “nonpolar”!
The chemical composition of the pellet that softenned in acetone in Part 1 was Polystyrene
(PS). PS is not soluble in water because it is non-polar, while water is polar. Non-polar
molecules will not dissolved in polar solutions. However, acetone is also non-polar, so there are
intramolecular forces that will allow PS to dissolve in the acetone.
2. What is a protein, and why is it a polymer? What happened to the protein, with the
addition of three chemicals, and why?
A protein is a macromolecule found within the body that operates and controls many of the
body’s functions. Proteins are considered a polymer because they are made through the
polymerization of amino acids. The protein in this case was the albumin. When the three
different chemicals were added to the albumin a precipitate formed. This is because when the
albumin reacts with the chemical it formed an insoluble ionic compound which came out of
solution as a solid.
3. Give an example of a biological polymer. What does its subunit look like? Why is it
considered a polymer?
One example of a biological polymer is glycogen. Glycogen is a polysaccharide made up of
monosaccharide subunits. In the case of glycogen the subunit is glucose. Glycogen is
considered a polymer because it is made through the process of polymerization in which
glucose molecules are brought together through dehydration synthesis.
4. Discuss why the density of the two branched material (HDPE and LDPE) differed,
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