Class Notes (1,100,000)
CA (630,000)
UTM (20,000)
Chemistry (800)
CHM242H5 (100)
Lecture

Jan. 3 lecture


Department
Chemistry
Course Code
CHM242H5
Professor
Judith C Poe

Page:
of 2
Start for unit 3 test:
-Polymers: are large, usually chainlike molecules that are built from small molecules called
monomers
-Polymer Types:
1. by components
a. homopolymers: contains a single type of monomers
example 1: Polyethlene CH2=CH2
example 2: Teflon CF2=CF2
b. copolymers: contains two diff. types of monomers
example 1: nylon H2N-(CH2)6 NH2
example 2:HO2C-(CH2)4 CO2H
2. By mechanism of polymerization
a. addition polymerization
-monomers add together
-initiated by a free radical (something that has a single unpaired
electron)
-monomer is an alkene
- examples: Polyethylene and PVC
b. condensation Polymerization:
-a small molecule, such as H20 is produced
-nucleophilic substitution
-example: hexamethylenediamine
-Proteins are polymers of amion acids
www.notesolution.com
-amino acids: 1 central carbon
Hydrogen
Another group (R)
NH3+
` CO2-
-All have optical isomers (excepting the one with the 2 similar groups). Important to the
structure of proteins
Amino acids dipeptide (chain of 2 amino acids)Polypeptide(if biologically active)
Protein
Proteins:
TypeMetabolic regulatorsCatalystsStructural or
Transport
NameHormone EnzymeStructural or
Transport
ExampleInsulinHexokinaseHemoglobin
-Much of the structure of the protein affects and helps its function (not a straight chain)
-backbone of the protein NCC (chains of them)
-Out of every N is an H
- a-carbon (alpha carbon) is the middle C and contains a R group
-Carbon (the second one) has oxygen
- The Proteins resonance structure explains its bond angles
www.notesolution.com