The Student Room Group

Colours of Substances (IGCSE Chemistry Edexcel)

The exam is tomorrow, and I was wondering if anyone had a table or knew all of the colours for substances that might pop up in the exam. I'm pretty sure I know all of them that I need to know, but can anyone help?? If you can that would be amazing.
I don't think they ask you to learn these, I think it comes from common knowledge. But here are some I can recall:

Bromine: Orange
Iodine: Grey/Purple
Copper Oxide: Black
General copper compounds: Blue
Iron (II) compounds: Sludgy Green
Iron (III) Compounds: Brown

I can't remember others! :smile:
I don't have a list sorry, but don't think these will come up in paper 2, seeing as there were lots of colour questions in paper 1.
Reply 3
Original post by Kronixion
I don't think they ask you to learn these, I think it comes from common knowledge. But here are some I can recall:

Bromine: Orange
Iodine: Grey/Purple
Copper Oxide: Black
General copper compounds: Blue
Iron (II) compounds: Sludgy Green
Iron (III) Compounds: Brown

I can't remember others! :smile:

Thanks, this is really helpful. I think the best way is for everyone to add all the ones they know so we have a common list! So:

Bromine: Orange
Iodine: Grey/Purple (Ithink it might be black)
Copper Oxide: Black
General copper compounds: Blue
Iron (II) compounds: Sludgy Green
Iron (III) Compounds: Brown
Calcium carbonate: Green
Magnesium metal: Silvery
Magnesium Oxide: White
Sulphur/Sulfur?: Yellow
Chlorine gas: Green
Carbon: Black

Corrections are welcome :smile:
iron oxide is grey
Colour Chemistry
================

- Compounds of group I and II are white

- Iron (II) compounds are green

- Iron (III) compounds are red-brown

- Copper (II) compounds are blue.
* Exception: Copper(II) oxide is black,
* Copper (I) oxide is red,
* Anhydrous copper (II) sulphate is white,
* Copper (II) carbonate is green

- Sulfur is yellow

- Flourine is yellow

- Chlorine is green

- Bromine is reddish brown

- Iodine is black

- Iodine vapour is purple

- Bromine vapour is red-brown

- Bromine solution is orange

- Iodine solution is dark brown

- Silver chloride is white

- Silver bromide is pale - yellow

- Silver iodide is yellow

- Metal is shiny silver
* Magnesium oxide is white ash
* Except: Gold is shiny yellow
* Copper is red brown/pink

- Lead (II) iodide is yellow

- Lead (II) chloride is white

- Carbon dioxide, Sulfur dioxide, Oxygen, Nitrogen, Ammonia, Noble gases and Carbon monoxide are colourless.

- Nitrogen dioxide is brown
Original post by Artemis6774
Thanks, this is really helpful. I think the best way is for everyone to add all the ones they know so we have a common list! So:

Bromine: Orange
Iodine: Grey/Purple (Ithink it might be black)
Copper Oxide: Black
General copper compounds: Blue
Iron (II) compounds: Sludgy Green
Iron (III) Compounds: Brown
Calcium carbonate: Green
Magnesium metal: Silvery
Magnesium Oxide: White
Sulphur/Sulfur?: Yellow
Chlorine gas: Green
Carbon: Black

Corrections are welcome :smile:

copper II carbonate is green

Quick Reply

Latest

Trending

Trending