Exam (elaborations)
ITP 341 Midterm 1 Questions and Answers Latest Update
- Course
- ITP 341
- Institution
- University Of Southern California
ITP 341 Midterm 1 Questions and Answers Latest Update
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Solution 2024/2025Pepper
ITP 341 Midterm 1 Questions and Answers
Latest Update 2024-2025
Polymer (Macromolecule) ANS✔✔ Large molecule consisting of a number of
simple chemical units. (ex. Polyethylene)
Monomer ANS✔✔ Molecule that combines with others to form a polymer.
(ex. Ethylene)
Oligomer ANS✔✔ Short polymer chain, low molecular weight polymer,
constituted of at least two monomers; Fragment or piece of a polymer.
Constitutional Unit ANS✔✔ Smallest unit of a structure that retains the
characteristics of the main chain. (ex. Polyethylene: CH2)
Homopolymer ANS✔✔ A polymer formed by only one monomer. (ex.
Polyethylene)
Copolymer ANS✔✔ Polymer made up of 2 or more types of monomers. Made
by condensation reaction.
Plastic ANS✔✔ Used to indicate specific category of high molecular weight
materials which can be shaped using a combination of heat, pressure, and
time.
All plastics are polymers, but not all polymers are plastic.
, Solution 2024/2025
Pepper
Polymerization ANS✔✔ Process of reacting polymers to create polymer
chains; Process of how monomers combine together to become polymers.
Cellulose Nitrate (Parkesine) ANS✔✔ First man-made plastic. 1838.
Replaced ivory.
The 1970s ANS✔✔ The growth of plastic for packaging application
The 1980s ANS✔✔ Environmental concern for plastic packaging (litter and
landfills). Marbro Barge Trip (1987) -> ideas of biodegradable plastic.
Natural Polymers ANS✔✔ Wood, cellulose, rubber (natural)
Synthetic Polymers ANS✔✔ -Plastics (Can be shaped using a combination of
heat, pressure, and time)
-Elastomers
-Fibers
Advantages of Plastic ANS✔✔ -High strength to weight ratio
-Variety of forms
-Ergonomics and breakability
-Inexpensive
-Less energy to transport
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