AQA GCSE Chemistry Unit 1 - June 10th 2014 *OFFICIAL THREAD*

Hi, can someone please explain the Miller-Urey experiment for me please? Nothing's sticking today! :frown:

Reply 182

Original post by 21sophie21

Hi, can someone please explain the Miller-Urey experiment for me please? Nothing's sticking today! :frown:

heya, its basically a process in which scientists 'miller and urey' were trying to re-create Earth's early atmosphere and see how/if life was formed (which it was - amino acids were formed)

here is a diagram :smile:

--the electricity sparks represent lghtning
--gases in the atmospere (the circular glass thing) were roughly CO2, Nitrogen, (i think oxygen) and a mixture of other gases, such as Argon etc

Reply 183

username1290300

3

Original post by 21sophie21

Hi, can someone please explain the Miller-Urey experiment for me please? Nothing's sticking today! :frown:

They took the gases that were thought in the early atmoshere (Nitrogen, CO2, Ammonia, Methane and water vapour) and added electrical sparks to them. The result was that 11 amino acids were formed.

Bit basic, but there you go!

(edited 9 years ago)

Reply 184

Shiaam :D

Original post by AnonymousNerd

I just did my real GCSE Chemistry Unit 1 exam today. We did it 1 day earlier because the school is have a teachers strike. It was incredibly hard! I wish I had revised 'Phytomining'. It was a 6 mark question and I didn't know what it was, so I guessed it was combustion of a virus! How silly of me! :frown:

Let me know how others found it :frown:

What at other questions came up

Reply 185

Original post by AnonymousNerd

I just did my real GCSE Chemistry Unit 1 exam today. We did it 1 day earlier because the school is have a teachers strike. It was incredibly hard! I wish I had revised 'Phytomining'. It was a 6 mark question and I didn't know what it was, so I guessed it was combustion of a virus! How silly of me! :frown:

Let me know how others found it :frown:

wait.. WHAT?! what were the questions :cool:

Reply 186

21sophie21

Original post by ohmyapplepie

They took the gases that were though in the early atmoshere (Nitrogen, CO2, Ammonia, Methane and water vapour) and added electrical sparks to them. The result was that 11 amino acids were formed.

Bit basic, but there you go!

Thank you! And so the amino acids are the basics to life etc..

Reply 187

Original post by AnonymousNerd

I'm only joking, sorry to get your hopes up everybody!

wow.. lol

Predictions?

Original post by 21sophie21

Thank you! And so the amino acids are the basics to life etc..

Pretty much I think! Thanks for the rep :smile:

Reply 190

Original post by chronicmusic

Predictions?

6 marker being being either (in my opinion)
-extraction of metal OR purifying of metals
-limestone cycle
-+ and - of mining (i.e. quarrying etc)

Reply 191

21sophie21

Original post by Blueyy__

heya, its basically a process in which scientists 'miller and urey' were trying to re-create Earth's early atmosphere and see how/if life was formed (which it was - amino acids were formed)

here is a diagram :smile:

--the electricity sparks represent lghtning
--gases in the atmospere (the circular glass thing) were roughly CO2, Nitrogen, (i think oxygen) and a mixture of other gases, such as Argon etc

Thank you so much! So the amino acids are basics of life and stuff.

Reply 192

Original post by 21sophie21

Thank you so much! So the amino acids are basics of life and stuff.

yes! amino acids are essential for protein growth - which is essential for building life :smile:

Reply 193

Original post by AnonymousNerd

No. Aren't amino acids are used to make sperm in a females vagina?

no..

Reply 194

FS97

1

Just did a past paper and had trouble on one question. They mentioned argon being used in the production of Titanium and it is apparently because it is not reactive, and if oxygen had been used it would have oxidized either Magnesium or Titanium, worth noting for the exam just in case...

And also they mentioned Copper Carbonate, and eventually it becomes Copper Oxide or something so no more Carbon Dioxide is produced when it is heated.

Reply 195

thepurplerain

15

Original post by FS97

Just did a past paper and had trouble on one question. They mentioned argon being used in the production of Titanium and it is apparently because it is not reactive, and if oxygen had been used it would have oxidized either Magnesium or Titanium, worth noting for the exam just in case...

And also they mentioned Copper Carbonate, and eventually it becomes Copper Oxide or something so no more Carbon Dioxide is produced when it is heated.

Out of curiosity, what year was that paper from?

Reply 196

chronicmusic

Original post by Blueyy__

6 marker being being either (in my opinion)
-extraction of metal OR purifying of metals
-limestone cycle
-+ and - of mining (i.e. quarrying etc)

Thanks

Reply 197

FS97

1

Original post by thepurplerain

Out of curiosity, what year was that paper from?

I think it was the Jan, 2013 paper

Reply 198

jadeskittles