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- 1. Multiple Choice
A chain of repeating units (called monomers)
monomer
dimer
replicate
polymer
- 2. Multiple Choice
Sodium alginate is
synthesized in the lab by heating salt in the presence of hydrophobic molecules.
a natural polymer obtained from kelp and seaweed
used as a synthetic replacement for salt.
not a polymer.
- 3. Multiple Choice
A polymer made in the laboratory (or industry) usually made from petrochemicals
nature polymer
natural polymer
protein
synthetic polymer
- 4. Multiple Choice
Once formed, it can be heated and reformed over and over again
thermoset
thermoplastic
elastomer
kevlar
- 5. Multiple Choice
Which of the following is a type of natural polymer?
Sodium Alginate
poly vinyl acetate
polystyrene
polytetrafluoroethylene
- 6. Multiple Choice
Which of the following determine the properties of a polymer?
chemical nature of the monomer
length of the polymer chain
how the monomers are joined together
All of the above
- 7. Multiple Choice
The birefringence effect that occurs when a polymer is viewed between two polarizing filters represents the _________________ regions of the polymer.
Crystalline
Amorphous
Cross-Linked
Branched
- 8. Multiple Choice
A thermoplastic polymer will be ______________________.
below its glass transition temperature.
soft and flexible
rigid and brittle
translucent
rubbery
- 9. Multiple Choice
Which of these is the best example of how the polymer molecules are arranged in Teflon tape?
none of the above
- 10. Multiple Choice
One explanation for Teflon's low coefficient of friction, hydrophobic and biologically inert properties is.
The electronegativity of Fluorine
The thin, smooth surface is impossible for another molecule to create a cross-link
The IMF of the individual monomers in the structure make it difficult for other molecules to bond.
The highly branched and cross-linked nature of the polymer doesn't create any areas of adhesion for other molecules.
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