If the chain is just carbon atoms then it's formed by addition polymerisation If the chain has other types of atoms (eg. Carbon and nitrogen) then it's formed by condensation polymerisation...
Yeah, so if the question was something like "Which type of polymerisation is this?" How would you find out?
They will usually give you a diagram of the structure and they'll ask you to identify what ype of polymerisation is it. The way I like to remember it is this:
Condensation polymers will have di-ols and di-acids (This if for national 5 anyway). The monomers for these will have more than one functional group (usually COOH and OH).
Addition polymers will have Monomers which are UNSATURATED! So it will have double bonds.
For addition Polymerisation, I would recognise that the functional group of the monomer is the double bond.
For the condensation Polymerisation, I would recognise that there is an Oxygen atom ( I usually see its a carboxyl group and Hydroxyl group, they take a OH from the carboxyl group and H from alcohol to form water)
I am not 100% sure but If a question like that came up that's how I will tackle it !
Yeah I would do that, I would focus on the areas you find difficult because you won't have enough time to look at everything in detail. Look at the sections where you can pick up a lot of marks.
Yeah I would do that, I would focus on the areas you find difficult because you won't have enough time to look at everything in detail. Look at the sections where you can pick up a lot of marks.
Another question i would like to ask is just say i get 15 marks in my assignment and 15 marks in my multiple choice how many more marks would i need to pass?
Another question i would like to ask is just say i get 15 marks in my assignment and 15 marks in my multiple choice how many more marks would i need to pass?
If you get 15/20 in section 1 and 15/20 in Assignment, that's 30% overall. Last year, for a C grade it was 48 percent so If you got 20/60 in section 2, then you would get 50% overall.