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Anyone want help with AS AQA Chemistry?

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Yep, got it now. Thanks!

My teacher is terrible, so I'm mostly just having to self teach myself so sorry about all these questions, I'll be asking a lot of stuff hahaha

Great! If you want to draw any compounds out on paper using different formulae then I don't mind checking it's correct for your notes!

And it's okay! It helps me too :biggrin:

Reply 21

derpz

Original post by t.thompson22

Great! If you want to draw any compounds out on paper using different formulae then I don't mind checking it's correct for your notes!

And it's okay! It helps me too :biggrin:

Just desperately trying to revise now since haha

Post some exam style questions if you have any, and then we can check answers and working? Or if you've had some past questions which were kind of difficult

Reply 22

derpz

Can someone list all the practicals we could be asked to write a method for?

Hookers and Cocaine

Original post by Daniel9998

Hookers and Cocaine

If only haha

Reply 25

t.thompson22

Original post by derpz

Can someone list all the practicals we could be asked to write a method for?

The AQA specification has all the required core practicals. They will be placing an emphasis on these practicals to ensure the teachers are actually teaching it! It'll be mostly the 'how science works' questions.

Reply 26

derpz

Original post by t.thompson22

So these would be:

TItration
Calirometry
Ion identification
.....................

Reply 27

Squishy•

Original post by derpz

Yep, got it now. Thanks!

My teacher is terrible, so I'm mostly just having to self teach myself so sorry about all these questions, I'll be asking a lot of stuff hahaha

If you are asked "what does structural formular show?" Or any other type then write down the definitions I have provided for you previously, it's alright understanding but if asked you have to say what they show in terms of the molecules and bonds.
Molecular formular shows the total number of each atom in a compound.(I forgot that one) 😁

Reply 28

derpz

Original post by Squishy•

Thanks!

Im getting worried now because we still havent covered all the content, according to the spec we still have quite a bit to do:/

Reply 29

t.thompson22

Original post by derpz

Thanks!

Im getting worried now because we still havent covered all the content, according to the spec we still have quite a bit to do:/

What topics do you still have to cover?

Reply 30

derpz

Original post by t.thompson22

What topics do you still have to cover?

Electrophilic addition, neuclophilic subtraction, chlorination, alcohols and god knows how many other ones...:/

Have you already finished all the content?

Reply 31

t.thompson22

Original post by derpz

Electrophilic addition, neuclophilic subtraction, chlorination, alcohols and god knows how many other ones...:/

Have you already finished all the content?

From that list, I can teach you Electrophillic addition, nucleophillic substitution and alcohols. And no, for physical chemistry we've still got to do a couple of more lessons on Equlibria, we need to do Redox, Reduction & Oxidation and I've got two whole modules of inorganic chemistry to do still :biggrin:

Reply 32

derpz

Original post by t.thompson22

Phew, I though I was just behind and people had started revision already.

I've completed Equilibria and Redox so I could help with that as well, and any help would be good. That way, it'll be easier when we're learning it in lesson :smile:

Which inorganic topics do you still have to do?

Reply 33

Workangel_24

Original post by t.thompson22

Hi, could you please explain electrophilic addition and nucleophilic substitution. Thanks!

Reply 34

t.thompson22

Original post by derpz

Which inorganic topics do you still have to do?

I've got Group 2, the alkaline earth metals & Group 7, the halogens still to cover with all modules in those topics. I completely finished organics though which is great!

Reply 35

t.thompson22

Original post by Workangel_24

Hi, could you please explain electrophilic addition and nucleophilic substitution. Thanks!

I'll start with Nucleophillic Substitution.

A nucleophillic is a species that has a lone pair of electrons that it donates to an electron-deficient carbon atom to form a covalent bond.

All nucleophilles have a lone pair of electrons situated on an electronegative atom, they are either a negatively charged ion or have a delta negative region. Examples include -HO, NH3 and -CN.

They substitute the halogen atom in a haloallane. The halogen that leaves the haloallane is called the Leaving Group.

I'll draw out the mechanisms for you.

Reply 36

t.thompson22

Here, I've used ethane with varying halogen atoms and varying nucleophiles including hydroxide, ammonia & cyanide. With ammonia there's a couple of more steps but it's easy once you know them.

Original post by Workangel_24

Hi, could you please explain electrophilic addition and nucleophilic substitution. Thanks!

Reply 37

Workangel_24

Original post by t.thompson22

Here, I've used ethane with varying halogen atoms and varying nucleophiles including hydroxide, ammonia & cyanide. With ammonia there's a couple of more steps but it's easy once you know them.