DF 7, 8, 9, 10 Flashcards
1
Q
define polymerisation
A
small molecules called monomers, joining together to produce a long chain polymer
2
Q
what are A-A polymers
A
- a polymer molecule that is made up of monomer molecules A, where they are all the same
3
Q
what are A-B polymers
A
- a polymer that consists of the alternation of two different monomers
4
Q
give two examples of A-B polymers
A
- polyamides (nylons)
- polyesters
5
Q
what reaction is needed for polymers to be formed
A
- addition polymerisation (A-A)
- copolymerisation (A-B)
6
Q
how do you name polymers
A
- by placing the name of the monomer in brackets and adding poly to the beginning
7
Q
what’s the ideal gas equation
A
PV = nRT
P - Pa
V - m3
n - moles
R - 8.31
T - Kelvin
8
Q
what does incomplete combustion form
A
carbon monoxide
9
Q
what is avogadro’s constant
A
- 6.02 x 10 ^23
10
Q
what are:
- standard temp and pressure
- room temp
A
- std. temperature (0 degrees) 273 K
- std. pressure 1 atm (101.3 kPa)
- ## room temp 25 degrees, 298 K
11
Q
what is the volume of gas at RTP
A
- 24.0 dm3
12
Q
what are structural isomers
A
- they have the same molecular formula but the atoms are bonded together in a different order
13
Q
what are the different types of structural isomers
A
- chain isomerism, alkane chain is jumbled up
- position isomerism, functional group is changing position
- functional group isomerism, same molecular formula and different functional group
14
Q
what are the two types of stereoisomerism
A
- E/Z isomerism or cis/trans isomerism
trans —> E (lightning bold)
cis —> Z (v shape) - optical isomerism
15
Q
what is the equation of a hydrocarbon undergoing complete combustion
A
hydrocarbon + oxygen —-> carbon dioxide + water
