Just talk to me :3

Oh haha you posted your reply inside my quote! I was sat there for so long thinking: I didn't type that! Well, in answer to your question, biology revision. Woo! Haha, I know you want to cheer too so I won't hold you back Posted from TSR Mobile

hahaha oops I have a habit of doing that - sorry!! Ahh I see - fun hahahaha

Haha don't worry - I'll just have to worry about that for next time!

Yeah - ooh, do you mind if I ask you a question about chromatography?

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Hahaha yep! And of course not - ask away!

This is the part where I overload you with new songs to listen to

It doesn't say in the video, but the song is by an Australian band from the 80s called Midnight Oil
[video="youtube;9hpX6AGSLuU"]https://www.youtube.com/watch?v=9hpX6AGSLuU[/video]

Thanks! Urmm...why would a non-aqueous solvent be used instead of water as the mobile phase? (My guess is because if you have different unknown samples, there's a greater chance they'll dissolve in it but I'm not certain...)

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It provides a better way of separating water insoluble compounds (that are non polar) - so that you can detect each sample more easily

I hope this is the kind of answer you are looking for!

Ohhh thanks so much Amellia! Yes it is, haha sorry that was a pretty vague question. In the question there's a chromatogram with two known and two unknown samples. Thanks!

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Aww that's no problem Matrix - you are welcome! I have to do chromatography this year too

Yay! Ooh, do you like it? How has it changed from GCSE?

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I didn't actually do it at GCSE, but you have to do it in AS and A2. I think it is quite similar to what you are doing now! You have to know gas-liquid and column chromatography, about the stationary and mobile phases for each (eg the eluent, resin etc)

Oh right. We've done gas-liquid but not column (I don't think ) and we haven't gone into too much detail about the phases. What's your favourite topic in chemistry?

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talking to you

Ahh I see - you know a lot more than I do when I first did chromatography! In AS is was mechanisms (substitution, elimation) and at A2 either Ligands or Freidel-Crafts acylation (don't worry - they sound horrid but they aren't too bad!)

Haha
Cool, yeah they sound really complicated!

What're you doing at the moment?

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Acylation will become your best friend at A2, once you grasp it its easy marks!
I'm chemistry or just in general? Well we have finished the spec already, right now I'm reading an old textbook I found about all the maths I need for first year engineering

Haha thanks for this SassKing! Great song although I did get quite a shock when the lead singer started singing I really wasn't expecting him to sound like that

Haha no Quite a different voice I suppose Quite powerful