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Is COBALT and CHROMIUM chemistry in the new AQA A-level CHEMISTRY Spec?

Anyone out there that knows about this? Any feedback is appreciated thankyou.
Reply 1
Avatar for kiiten
kiiten
18
Original post by Roman hang Limbu
Anyone out there that knows about this? Any feedback is appreciated thankyou.


What about cobalt and chromium - the electron config, in transition metals?
Original post by Roman hang Limbu
Anyone out there that knows about this? Any feedback is appreciated thankyou.


No, it's been removed from the new specification.

"The main difference is the removal of all cobalt and chromium chemistry. This includes the chromate/dichromate equilibria. Also removed is the reference to Lewis acids and Lewis bases."

Source: http://www.aqa.org.uk/resources/science/as-and-a-level/chemistry-7404-7405/plan/summary-of-changes
Reply 3
Avatar for kiiten
kiiten
18
Original post by markschemes
No, it's been removed from the new specification.

"The main difference is the removal of all cobalt and chromium chemistry. This includes the chromate/dichromate equilibria. Also removed is the reference to Lewis acids and Lewis bases."

Source: http://www.aqa.org.uk/resources/science/as-and-a-level/chemistry-7404-7405/plan/summary-of-changes


But you still need to know about how their electron configs are different to other transition metals right?

Also do you have a link for the changes to biology? :smile:
Original post by kiiten
But you still need to know about how their electron configs are different to other transition metals right?

Also do you have a link for the changes to biology? :smile:


Yes I assume so. Also, chromium and copper differ from the metals between Ti-Cu, not cobalt.

Here it is: http://www.aqa.org.uk/resources/science/as-and-a-level/biology-7401-7402/plan/summary-of-changes
Reply 5
Avatar for kiiten
kiiten
18
Original post by markschemes
Yes I assume so. Also, chromium and copper differ from the metals between Ti-Cu, not cobalt.

Here it is: http://www.aqa.org.uk/resources/science/as-and-a-level/biology-7401-7402/plan/summary-of-changes


Ah yes :redface: - thank you :smile:
Original post by markschemes
No, it's been removed from the new specification.

"The main difference is the removal of all cobalt and chromium chemistry. This includes the chromate/dichromate equilibria. Also removed is the reference to Lewis acids and Lewis bases."

Source: http://www.aqa.org.uk/resources/science/as-and-a-level/chemistry-7404-7405/plan/summary-of-changes


Thank the thousand gods for that. Old papers seemed to love cobalt and chromium but i guess they got bored after using it in almost every single paper! Also do you know if we have to learn about molecular fragmentation?? Thankyou for replying btw lol.
Original post by kiiten
What about cobalt and chromium - the electron config, in transition metals?


Oh no i meant the reactions and colour changes.
Original post by Roman hang Limbu
Thank the thousand gods for that. Old papers seemed to love cobalt and chromium but i guess they got bored after using it in almost every single paper! Also do you know if we have to learn about molecular fragmentation?? Thankyou for replying btw lol.


It says HERE that we don't need to know about anything about fragmentation.

"(Fragmentation of molecular ions is not included on the specification and is only included here as useful background information)."

There's no mention of it in the specification either.

Yeah it seems to come up quite a bit in past papers but rest assured, it can be ignored.
(edited 6 years ago)
Original post by markschemes
It says HERE that we don't need to know about anything about fragmentation.

"(Fragmentation of molecular ions is not included on the specification and is only included here as useful background information)."

There's no mention of it in the specification either.

Yeah it seems to come up quite a bit in past papers but rest assured, it can be ignored.


Thankyou vey much for helping. :smile:

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