# JonR

Members

22

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• Gender
Male
• Exams
May 2015
• Country
Norway
1. ## Maths exploration help needed!

I don't think there's anything psychology related on this page, but if you decide to drop the psychology theme there are a lot of good suggestions. http://ibmathsresources.com/2013/09/03/maths-ia-exploration-topics/
2. ## What should I know before starting IB1?

If you google 'IB maths SL subject guide' and download the subject guide, you'll find a section called 'presumed knowledge'. Making sure you're comfortable with everything covered there would probably be your best bet.
3. ## Lab Report I cant write a good lab report

i cant come up with good variables i always have like 2 and theyre not good Read other people's reports and find out what variables they use.
4. ## Lab Report I cant write a good lab report

Find out what you're doing wrong. I'm sure people here can help you out with that, but then we'd need some more info than 'they aren't good'.
5. ## TOK Presentation

You gotta be strategic, so yes, if your teacher favours debates then do a debate. As for the other stuff, as iamyourmum said, it's impossible to say without knowing anything about your presentation.
6. ## Basic question about energy levels

It's because 5s and 5p are 'more accessible' than 4f, which is illustrated by the diagram below. The energy levels are not filled up chronologically, which also explains the octet rule. However, this is due to the sub-orbitals, so the basic model does not offer any explanation for this. If you want to understand how this stuff works, my advice would be getting a good grasp on the workings of electron configurations. Translating it to the basic model won't be a problem.
7. ## Basic question about energy levels

Yes it does. Take xenon for example: The basic model should give you 2, 8, 18, 18, 8 The actual electron configuration is (Kr) 5s2, 4d10, 5p6
8. ## Definitive VSEPR Bond Angle List?

From what I understand there's usually some leeway in the exams with regards to the exact VSEPR bond angles, so if the discrepancies are fairly small, I wouldn't worry about it. As for the octahedral molecule, you are right that there's a 180 degree angle between the axial atoms, but I suppose it's sufficient to state that there's 90 degrees between all the 'neighbouring' atoms.
9. ## If you are given a question on a leader of a single-party state. Can you use Lenin

Thanks JonR, it's good to have final confirmation, thank you. Do you happen to have or know where the Nov 2013 markscheme can be found?? You might be able to find it uploaded somewhere if you search around, but otherwise I would recommend just talking with your history teacher or coordinator as your school probably got it off ibo.org. Of course, if you're stacked and don't mind paying £120, you could just buy it yourself.
10. ## If you are given a question on a leader of a single-party state. Can you use Lenin

Alright, no more speculation: You can use Lenin if given a question on a leader of a single-party state. I checked with my teacher, and the markscheme for the november 2013 route 2 paper 2 exam clearly states that Lenin, along with Mao, Hitler, Mussolini, Stalin, etc. is likely to be a popular choice for the questions regarding single-party states.
11. ## If you are given a question on a leader of a single-party state. Can you use Lenin

Why wouldn't you be able to use Lenin? He was the undisputed leader of Soviet Russia, a single-party state, from 1917 to 1924.
12. ## Presentation Rate my knowledge issue and suggest improvements please!

TOK is all about how you know stuff, so the second one is definitely better (even though it's still a bit too generic in my opinion, perhaps you could clearly incorporate an AoK or some WoKs?). Watch out though, and make sure you don't make an ethical argument. You have to focus specifically on how you know things through the WoKs and AoKs. You should check out the subject report for TOK, it gives you a lot of insight into what they actually want.
13. ## History IA Help

I don't see how you could use a fictional novel as a central piece of evidence, seeing as it's, well, fiction. If it's from the time of the events you are investigating, it might allow you to say something about popular opinion, but that's about it. So, even though it sounds like an interesting project, I think you'd have a hard time getting good grades from it :/ Anyway, like you I also just started the IA, so maybe there are some people with more experience who could shed some light on the issue.
14. ## Question regarding hydrogenation of but-2-ene vs benzene

Thanks to all three of you, I get it now!
15. ## Question regarding hydrogenation of but-2-ene vs benzene

So, if benzene had pure double bonds, instead of delocalised bonds, the enthalpy of hydrogenation would be equal to that of but-2-ene? (-120 kJ)
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