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AQA AS Chemistry 7404/1 and 7404/2 - 27th May 2016 and 10th June 2016

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Reply 180

will_5054

Does anyone know where i can get access to the paper 1 of the set 2 papers & the mark scheme?

Reply 181

ajsullivan

Will_5054

check out www.scienceskool.co.uk

Exams section.

Good luck

Alex

Reply 182

JGang

Original post by haes

Hey guys can anyone tell me all the group 7 reactions we need to know? thank you in advance

The displacement reactions for Chlorine,Bromine and Iodine.

Solid Sodium Halides(F,Cl,Br,I) with Sulfuric Acid, and the subsequent redox reactions of HBr and HI.

Also, the Silver Nitrate test.

Reply 183

FridayIsForever

Original post by JGang

The displacement reactions for Chlorine,Bromine and Iodine.

Solid Sodium Halides(F,Cl,Br,I) with Sulfuric Acid, and the subsequent redox reactions of HBr and HI.

Also, the Silver Nitrate test.

In addtion to these, we also need to know:

The reaction of chlorine with water to form chloride ions and chlorate (I) ions

The reaction of chlorine with water to form chloride ions and oxygen

and,

The reaction of chlorine with cold, dilute, aqueous NaOH and uses of the solution formed

Reply 184

man i

anyone else here retaking the old syllabus exams or not

Reply 185

thenextchemist

Original post by man i

anyone else here retaking the old syllabus exams or not

Moi
U ready?

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Reply 186

man i

Original post by Bloom77

Moi
U ready?

Posted from TSR Mobile

little nervous i have a feeling they're gonna put A2 based questions in the exam.

Reply 187

haes

Original post by JGang

The displacement reactions for Chlorine,Bromine and Iodine.

Solid Sodium Halides(F,Cl,Br,I) with Sulfuric Acid, and the subsequent redox reactions of HBr and HI.

Also, the Silver Nitrate test.

Can you tell me the reactions of HBr and HI because the products in my textbook are different from those my teacher taught me, so I'm unsure which is correct

Reply 188

thenextchemist

Original post by man i

little nervous i have a feeling they're gonna put A2 based questions in the exam.

Same here
I think it would definitely be harder than usual.
I'm only retaking unit 1, wbu?

Reply 189

emprex

what units will be on the first paper?

can someone pls message me if they have the list?

Reply 190

Studgrad21

Just worked that out😊

Physical:
Atomic structure
Amount of substance
Bonding
Energetics
Chemical equilibria, Le Chatelier's principle and Kc
Oxidation, Reduction and Redox equations

Inorganic:
Periodicity
Group 2 Alkali Metals
Group 7 Halogens

Relevant Pratical skills - can some one give specific example of this?

(edited 7 years ago)

Reply 191

Studgrad21

Original post by emprex

what units will be on the first paper?

can someone pls message me if they have the list?

^^^^

Reply 192

emprex

Original post by MerishaX

Just worked that out😊

Physical:
Atomic structure
Amount of substance
Bonding
Energetically
Chemical equilibria, Le Chatelier's principle and Kc
Oxidation, Reduction and Redix equations

Inorganic:
Periodicity
Group 2 Alkali Metals
Group 7 Halogens

Relevant Pratical skills - can some none give specific example of this?

thank you

Reply 193

ajsullivan

Original post by haes

Can you tell me the reactions of HBr and HI because the products in my textbook are different from those my teacher taught me, so I'm unsure which is correct

Try here:

http://www.scienceskool.co.uk/group-7-halogens.html

Good luck

Alex

Reply 194

metrize

Original post by haes

Can you tell me the reactions of HBr and HI because the products in my textbook are different from those my teacher taught me, so I'm unsure which is correct

HBr + H2SO4 = Br2+H2O+SO2
HI + H2SO4 = I2+H2O+H2S

For the HI it could make just S instead of H2S too, you need to balance those though

Reply 195

metrize

Original post by FridayIsForever

Whats the difference between cold dilute and aqeuous NaOH reactions

Reply 196

man i

Original post by Bloom77

Same here
I think it would definitely be harder than usual.
I'm only retaking unit 1, wbu?

unit 1 and 2 need to cushion myself for unit 4 and 5

Reply 197

Studgrad21

Why does ionization energies decrease from one period to another? Thanks in advance

Reply 198

thenextchemist

Original post by man i

unit 1 and 2 need to cushion myself for unit 4 and 5

I'm feeling okay until now
I don't think I'm ready yet whoops
Glad I have the whole day tomorrow
Have you got a list of definitions?

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Reply 199

man i

Original post by Bloom77

I'm feeling okay until now
I don't think I'm ready yet whoops
Glad I have the whole day tomorrow
Have you got a list of definitions?

Posted from TSR Mobile

no tbf i should have created one the variation of the size of molecules and the strict marking between saying the word bigger and larger can make you lose alot of marks