19,916
edits
Changes
→Ion Formation
*Copper (II) Sulphate: +2 [[Ion]] of [[Copper]] giving the [[compound]] a blue colour.
*Manganese (II) Chloride: +2 [[Ion]] of [[Manganese]] giving the [[compound]] a pale pink colour.
*Manganese (IV) Oxide: +4 [[Ion]] of [[Manganese]] giving it a very dark brown colour, often appearing black.
*Iron (II) Sulphate: *2 [[Ion]] of [[Iron]] giving the [[compound]] a pale green colour.
*Iron (III) Sulphate: *3 [[Ion]] of [[Iron]] giving the [[compound]] a redish-brown colour.
: Gem stones with various colours (red rubies, green emeralds, blue sapphires) get their colour from the [[Transition Metal]] [[ion]]s they contain.
====Catalysts====