Edexcel A2 Chemistry 6ch04/05 JUNE 2015

I do Physics (Edexcel) and I don't think we learn anything really similar to the simpler cells we study in Chemistry so I don't see any relevance between the two other than simply having electricity as a topic. The circuits set up, and question types are generally pretty different. They're also pretty obsessed with capacitors. Bloody capacitors, unit 4 is going to be the death of me.

I have transition chemistry notes, if you want them.

could someone please explain to me steam distillation and how it's different from normal distillation

Can someone explain how I'm meant to work out what's being oxidized and what's being reduced in this question? Thanks

Ahh bless you, no idea what they are haha but my friend who does physics despises it lool! Ooh okay, that's unfortunate then, because if the two were similar then you could probably get a better level of understanding

Yes please that would be so helpful! Thankyou!

Steam distillation is for compounds (generally organic compounds) which have very high boiling points. This is useful for extracting molecules with a high boiling point as they may thermally decompose under normal distillation.

It works on the principle that immiscible substances, when mixed together will lower the boiling point of each other.

I'll get back to you tomorrow on the notes, it's 12 AM where I live now.

Sure haha oh gosh!

Transition Chemistry Notes.

https://drive.google.com/file/d/0BwBWX8dVcLhpVFpBNnRwR1dMV1E/view?usp=sharing

Could someone please explain how to do this one for me please?(:

Could someone please explain how to do this one for me please?(:

Hope that helps!


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Omg need help ASAP! So to go from a halogenoalkane to an amine.. Is it concentrated ammonia in ethanol heated in a sealed tube OR is it reflux? The CGP guide says reflux...

I thought halogenoalkane + NH3 or primary amine or secondary amine with ammonia (in a sealed tube) produces primary amines or secondary amines and tertiary amines respectively (or their salts).
http://www.chemguide.co.uk/organicprops/haloalkanes/nh3.html

And that halogenoalkanes + KCN/HCN in ethanol is the one that undergoes heat under reflux and gives nitriles.
http://www.chemguide.co.uk/organicprops/haloalkanes/cyanide.html

Hope that helps!


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Making sure you can do all the maths equations for the exam will help loads and will be easy marks as its the same all the time!

Would recommend doing all the past papers before the exam, I only have 3 left so far.

This is good advice.

Another important thing you can do is NOT waste time on MCQs.

My method is to go through the MCQs first and answer them as carefully as I can within the first try but within 20-25 minutes max. Leave MCQs you're unsure about, don't fret over it.

Do the theory parts and finish it all off, and then get back to multiple choice. Then spend the rest of the time rechecking everything.