Aqa chem 4/ chem 5 june 2016 thread

lol i do stuff like that anyway even though i know it. and yeah bio is horrid i was trying to cram the whole thing on sunday but then got to genetic engineering (last topic) and felt like jumping out of my bedroom window. ill try and finish it off tomorrow and then do past papers after

i was in ur shoes earlier today this was the best i came across

https://chemrevise.files.wordpress.com/2016/05/mod-5-revision-guide-4-transition-metals.pdf

last two page have all the colours youll need to know. unfortunately theres no shortcut, u just have to make up a pattern that works for you or just cram it raw.

one thing ive noticed tho is the colours tend to repeat for the same metal e.g. fe2+ is mostly green for everything and copper is pretty much blue for everything

Can someone please explainwhy you need a platinum electrode on the right?

lol i do stuff like that anyway even though i know it. and yeah bio is horrid i was trying to cram the whole thing on sunday but then got to genetic engineering (last topic) and felt like jumping out of my bedroom window. ill finish it off tomorrow and then do past papers after

You know when they ask why this cell is not rechargeable or ammeter reading would fall to zero. I don't understand that.

You don't need every colour spec specifically states fe cu and co in ppt reactions and cu nh3 deep blue cucl4 and cocl4

yeah this is weird. it could be to do with allowing electricity to flow

True, some exams are so mentally exhausting that by the end my hand is so tired and my brain feels like mush so writing a 3 instead of a 2 is entirely possible 😂

I don't know what exam board you do for bio (I do OCR) but gene technology is in the middle of our syllabus so imagine having to do all the gene tech and then having to do ecology and plant and animal behaviour after it....

i didnt even get to finish by biology revision for f215, got like halfway through then gave up on the day cause it was too much, im probably gonna have to cram it all in tomorrow and then do past papers like theres no tomorrow

oh that sucks for u haha all the ecology and plant stuff was in our first unit which went pretty good for me. but this unit im cramming for has all the complicated mechanisms and then the killer 25 essay

What past paper did you guys find the most difficult?

We haven't got any complicated mechanisms or an essay thankfully but they combat that with them allotting 150ums to this paper alone hence the grade boundaries are super low so you can easily drop 20 marks and still get full ums on the paper

im not well informed on the perfect ionic model theory can someone who knows it well bullet point the key ideas

im not well informed on the perfect ionic model theory can someone who knows it well bullet point the key ideas

Jan 2013/ June 2012
Last years paper was nice

There is only ionic interaction, electrostatic forces
The ions are perfect spheres (no charge cloud distortion)

no covalent character

-Assumes the lattice has only ionic bonding
-all ions are spherical
-all point charges