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AQA GCSE Chemistry - C2 & C3 (14th May 2015)

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Reply 400

Jules12345

Whats the ethical issue for iodine?!

Reply 401

Terrydaktal

Original post by Desouza123

For the improving investigation i put put it in a water flask so the temp remains constant but its probs wrong

definitely, becausethe temperature was the dependent variable, it was being measured and had to change, it did not need to be controlled

i said somthing stupid like using a boss and clamp to hold the thermometer so it didnt come out during the reaction accidentally, increasing the reliability of the results

(edited 8 years ago)

Reply 402

zc555

Original post by sophierox

It was the C2 paper, just before the q on why it had a low boiling point it asked you to draw a diagram apparently and I missed it out😓

Oh ok, in my school everyone did C2 last year so we just did C3. The first half was easy and then the second half was alright, it was easyish but I messed up. I was hoping for at least an A but I'm not sure now ;/

Reply 403

Desouza123

Original post by Terrydaktal

definitely, becausethe temperature was the dependent variable, it was being measure and had to change, it did not need to be controlled

Yeah ik didnt know what else to say

Reply 404

Roxyfreeman

What did you Get for the empirical formula

Reply 405

Desouza123

Original post by Roxyfreeman

What did you Get for the empirical formula

Pb2O3

Reply 406

Terrydaktal

Original post by Jules12345

Whats the ethical issue for iodine?!

does not give the person a choice, they may not want iodine, free choice is guarded by the universal declaration of human rights, article 1: "all born free and equal"

Reply 407

Jules12345

Original post by Roxyfreeman

What did you Get for the empirical formula

Pb2O3

Reply 408

Jonathanitb

Original post by Terrydaktal

does not give the person a choice, free choice is guarded by the universal declaration of human rights, article 1: "all born free and equal"

I put that it's adding a product that isn't natural to the food? Not sure if that counts! :s-smilie:

Reply 409

Terrydaktal

Original post by Jules12345

Pb2O3

yes same, it had a molar ratio of 1:1.5

Reply 410

Terrydaktal

Original post by Jonathanitb

I put that it's adding a product that isn't natural to the food? Not sure if that counts! :s-smilie:

hmm not sure if they care about rights of food, go check w/ amnesty international lol

Reply 411

Desouza123

Original post by Jonathanitb

I put that it's adding a product that isn't natural to the food? Not sure if that counts! :s-smilie:

Yeah i said food would not be organic

Reply 412

Roxyfreeman

Could you say someone may be allergic to iodine?

Reply 413

katnissandhazel

For the question about improving the experiment, I put that the beaker should have a scale on it. Didn't think much about that question but hopefully it should earn me a mark.
Also, what did people put for the ethical reason why iodine should not be added to foods?