Chemistry · Macromolecules
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Which of the following is not a polymer?
- A
Plastic
- B
Petroleum
- C
Starch
- D
Natural rubber
A polymer is a macromolecule made of repeating monomer units. Petroleum (crude oil) is a complex mixture of many different hydrocarbon molecules of various sizes and is not a polymer. Plastic, starch, and rubber are all examples of polymers.
Plastic is a polymer. It is made up of long chains of repeating units called monomers, which are chemically bonded together to form a larger molecule.
Petroleum is not a polymer but rather a complex mixture of hydrocarbons.
Starch is also a polymer. It is a carbohydrate polymer composed of glucose units joined together. It serves as an energy storage molecule in plants.
Natural rubber is also a polymer. It is composed of repeating units of isoprene. It is obtained from the latex sap of various plants and is commonly used in the production of rubber products.
Tagged under Chemistry · Macromolecules · 2010