classnotes - chapter 29

Science 8 classnotes

Chapter 29 - Plastics

Key Terms:

action polymer	condensation polymer	monomer
plastic	polymer	recycling

Objectives of chapter:

describe and explain the formation of synthetic polymers
distinguish between addition and condensation polymers
appreciate the recent history of the development of plastics
describe where plastics come from

Outline:

29.1 Organic molecules can link to form polymers

monomers in a chain

can be either natural- biological or synthetic - plastics

important to modern day living have surpassed steel as #1 useful material

29.2 Addition polymers result from the joining together of monomers

polyethylene HDPE and LDPE form a variety of common materials

examples and advantages

HDPE -examples

LDPE-examples

HDPE -advantage /disadvantage

LDPE -advantage /disadvantage

+ -

+ -

29.3 Condensation polymers form with the loss of small molecules

29.4 The development of plastics involve experiments and discovery

29.5 Polymers win WWII

29.6 the attitude about plastics have changed

Chapter links

national inventors hall of fame - http://www.invent.org
(needs flash to work)

society of plastics industry - http://www.socplas.org

national plastics center and museum -http://www.npcm.plastics.com

class text - conceptual physical science

PCDS useful links - sorted by topic