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Chem 104 exam four review
Terms in this set (36)
A large molecule built from smaller ones that consist of a long chain or chains of atoms.
Small molecules that are used to synthesize the larger molecules.
Molecules of high molecular mass that have characteristic properties because of their large size.
A compound added in small amounts to a polymer to make the polymer softer and more pliable
DEHP Diethylhexyl phthalate
A plastic that can be melted and reshaped over and over again.
The natural breakdown of a substance by fungi or enzymes.
Distinctive arrangement of groups of atoms that impart characteristic physical and chemical properties to the molecules that contain them.
In a polymer; a region in which the long polymer molecules have arranged neatly and tightly in a regular pattern.
Biomimetric material and properties
Materials that try to replicate specific properties of biological materials for use in human applications.
Amino Acids, condensation polymer
Beta glucose, condensation polymer
Amino acids, condensation polymer
What raw material is the source for most polymers?
What are the Big Six polymers?
Polyethylene LDPE, Polyethylene HDPE, Polyvinyle Chloride, Polystyrine, Plypropylene, Polyethylene Tetrephthalate.
Polythylene LDPE 4
translucent, soft flexible, and moderately tough
unreactive to acids and bases
bags, films, sheets of bubble wrap, toys, wire insulation.
Polyethylene HDPE 2
Similar to LDPE but more rigid, opaque, tougher, more dense
Containers such as milk, juice, detergent and shampoo, buckets, crates, and fencing.
Polyvinyl Chloride PVC/V 3
Rigid if not softened by a plasticizer, clear and shiny
Resistant to most chemicals *(oils, acids, and bases)
Plumbing pipe, house siding, charge cords, hotel room keys, garden hoses, waterproof boots, shower curtains.
Polystyrine PS 6
Crystal form transparent, sparkling, somewhat brittle, light weight foam, rigid
Food wrap, CD cases, transparent cups, foam cups, containers, food packaging trays, egg cartons.
Plypropylene PP 5
Opaque, tough, weathers high melting point, resistant to oils, acids, and bases.
Bottle caps, yogurt, carpeting, casual furniture, luggage.
Polyehtylene terephthalate PETE or PET 1
Transparent, strong, shatter resistant, impervious to acids and atmospheric gases
Soft drink bottles, clear food containers, beverage glasses.
What do the big six have in common?
They are all thermoplastics.
Could polymers be made from renewable biological materials?
Yes, but new technologies would have to be developed.
Condensation polymer used to make bulletproof vests.
Polylactic Acid (PLA)
A bioplastic used in applications like consumer products, biodegradable medical devices, and 3D printed prototypes.
Who invented Nylon?
Who invented plastic soft drink bottles?
Who invented Kevlar?
Who invented Bakelite?
Who invented a polypetide for replacing bond material in the body?
Linneaus C. Dorman
Does not literally dispose of polymers but it helps reduce the amount of new plastic entering the waste stream. Requires energy input instead of output.
Burning plastics emits CO. Some polymersd release hydrogen chloride during combustion. HLC greatly contributes to acid rain. SOme plastics contain inks with lead and cadmium which are concentrated in the ash, creating a secondary disposal problem
Out of sight, out of mind. Takes up space in congested areas, construction and upkeep costs, they may leak, they emit methane. Majority of plastics do not readily biodegrade in this. Linings create oxygen-free interior, preventing biodegradtion.
Seemingly a better option than source reduction as reusing can actually keep what is made from polluting the earth.
The Four Rs
Reduce, reuse, recycle, recover
Any of several US state laws that require deposits to be paid on beverages sold in recyclable bottles and cans.
Recommended textbook explanations
Donald J. DeCoste, Steven S. Zumdahl
Chemistry: The Molecular Nature of Matter and Change
Martin S. Silberberg, Patricia Amateis
Jason Overby, Raymond Chang
Chemistry: An Introduction to General, Organic, and Biological Chemistry
Karen C. Timberlake
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