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Mine hasn't been sent.

Yeah I did that one about a week ago - got around 80% (but my marking was quite generous, I understand that Carrot's marking is a lot more strict)

About to attempt the 2014 BOS 4U trial, lol what's the bet I won't even be able to get 20%

re: HSC Chemistry Marathon Archive Just a question: for the syllabus dot point 9.4.1.1 ("Outline the role of a chemist...and explaining a chemical principle that the chemist uses"), do you guys reckon we need to have a specific chemist (like an actual person), or just a generic description of...

re: HSC Chemistry Marathon Archive Describe - the ionisation of sulfuric acid is a highly exothermic reaction, and if not performed with greatest care, can cause water in the solution to violently spit, boil, and create a dangerous acidic mist. Explain - concentrated sulfuric acid is...

Re: Announcement from BOSTES - significant change to calculus courses I just feel like it would encourage a lack of understanding regarding lots of the formulae/identities encountered in the calculus based courses. For example, lots of my friends who do general maths have mentioned that they...

Re: Announcement from BOSTES - significant change to calculus courses Pleeeeaaase no. I guess they might just trying to stop the growing trend to undertake General Maths 2 instead of 2U (and above)?

My old maths tutor noted how in his HSC 4U exam (2011), many students did not know what the 'reflection property' of the ellipse was (even though it is mentioned explicitly several times in the syllabus). He used this as an example for why it's good to read the syllabus. There's also heaps of...

Don't worry about it for 2U. For 3U and 4U, it's a good idea to have a read over it

Awesome guide! I'd just like to reiterate these pieces of advice in particular - I did 2U accelerated last year and so have similar experience (except I got 94 not 97). It's very important to be physically and mentally healthy before you start your exam (sleep is vital), and also, to have a...

Well, I think I'll find it pretty hard to beat someone who's gonna come first in the state for 3U and 4U (ie you)

Re: HSC 2015 4U Marathon I'm struggling to see a way to solve it via t-method, at least not without another substitution (I don't know what additional sub would work anyway)

Yep haha - I figured it'll be good to get outside and escape the constant routine of studying all the time lol Lol - you're defs a lot more likely to achieve that than me, I'll seriously be lucky to get 30

I'm actually super keen

Re: HSC 2015 4U Marathon Don't know why you'd use t formulae.

Re: HSC 2015 4U Marathon The link you posted doesn't work

re: HSC Chemistry Marathon Archive Fair enough - for a given question, there's probably more important things to focus on than Winkler. But if time is available, it'll add depth and sophistication

re: HSC Chemistry Marathon Archive True, but briefly going over the method in a 5/6/7 marker will impress the hsc markers

re: HSC Chemistry Marathon Archive Just want to raise an interesting point about this - an information sheet I have about the Winkler method states that Mn2+ is oxidised to Mn3+. There's even a statement on Wikipedia concerning the confusion regarding the specific oxidation of manganese...