Ccea as level exams 2019Watch
I remember you and Cool R too! I wrote effervescence a lot too and said lit splint was extinguished. I let my stuff filter and moved on to the next section whilst it was still filtering so I didnt run out of time. Mine and everyone else's didnt go completely colourless because our teacher said it is just very hard to dissolve. Although on the last page I wrote that the alcohol had 2 layers and was immiscible but on the iodine part I said there were 2 layers, bottom light brown-orange and the top layer a darker brown and I didnt say purple because mine looked brown. Because it was one mark and I talked about 2 layers would I still lose a mark for not saying purple in the iodine even though the Q is only out of 1 or 2 or would I have had to say purple to get full marks?
Yeah it could have been worse. I was glad the chromatography was a long response question although I didnt really like the block diagram question and it took me forever to remember that the first question was a beating tray I had to come back to it at the end
Yeah, I remember you guys as well! For the last question I talked about the two layers to explain it being an organic solvent. I think I forgot to mention the colours. I think the other mark might have been about explaining why the organic solvent was saturated (solution would turn colourless if an unsaturated solvent was used- electrophilic addition).
Yes I talked about that - I said two layers form as a result of immiscibility hence organic and the iodine layer remains purple whereas I unsaturated ie C=C there would be a colour change to colourless - although I thought the chemistry paper was a bit iffy. But, my chem teacher says the actual modules are by far more important
I remember seeing a type of quadrat like it in a geog field trip. I remember my teaching saying that you sometimes use them if you don't want to crush anything with the grid. So I ended up just putting down "quadrat with no grid". I looked it up there now and I think the official name is an 'open frame quadrat'. Although who knows what ccea wanted lol.
also does anyone know the raw marks needed in chem to get a good A??