The Student Room Group
Uni students - Complete our survey >>
Uni students - Complete our survey >>
Uni students - Complete our survey >>

Cambridge Chemistry Challenge

Scroll to see replies

Yeah I discovered that it's something to do with colour but the order we have tired is wrong following the colour spectrum


Posted from TSR Mobile
And the one with iron is a blood red


Posted from TSR Mobile
Help on gold please


Posted from TSR Mobile
Original post by john smilth
Help on gold please


Posted from TSR Mobile


Me too
T(f) means freezing temp
Original post by john smilth
Yeah I discovered that it's something to do with colour but the order we have tired is wrong following the colour spectrum


Posted from TSR Mobile


What colour is it following then?
On copper what is f?
So for Cu I have tried

Spoiler



But no luck :frown:
Original post by rabirabbit
T(f) means freezing temp


So am I looking for a salt?

And if so, is there a table of data from which I can calculate which one
Now stuck on Rg any help


Posted from TSR Mobile
You need to find the colours of all the compounds


Posted from TSR Mobile
You're looking for a substance that lowers the freezing temperature of water when added.
Original post by rabirabbit
You're looking for a substance that lowers the freezing temperature of water when added.


I know.

How would I work out which substance it specifically refers to.

Thanks
I just goggled the amount o water and Tf change and got the answer :P
Argh! I'm still on Cu!!! Can somebody please help me? :frown:
Original post by ChemistryQuiz
Argh! I'm still on Cu!!! Can somebody please help me? :frown:


Which bit are you stuck on?
Original post by hollyleaf988
Which bit are you stuck on?


I know its something to do with Netwon's visible spectrum I get E, B,A,G,D but I don't get F & C. Also, some some colours of the compounds don't match. I don't know what am i doing wrong.
Original post by ChemistryQuiz
I know its something to do with Netwon's visible spectrum I get E, B,A,G,D but I don't get F & C. Also, some some colours of the compounds don't match. I don't know what am i doing wrong.


Well I think the colours are the molecules in their states at room temperature, so I think they should all match.
You just order the colour like the spectrum, and if you don't know the 2 of them ten sub them into the colours left over and swap them until it works :smile:
Original post by rabirabbit
Well I think the colours are the molecules in their states at room temperature, so I think they should all match.
You just order the colour like the spectrum, and if you don't know the 2 of them ten sub them into the colours left over and swap them until it works :smile:


Thank you for your help. :smile:
But I'm getting B and D as the same colours. Am I going right?
Original post by ChemistryQuiz
Thank you for your help. :smile:
But I'm getting B and D as the same colours. Am I going right?

Well B & D are similar, but B is probably correct if you've got the colour of the solution (it's quite well known for its colour)

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you