a gas and metal
There is no elemental iron (Fe) involved in this reaction, neither as reactant (iron sulphide -FeS- plus oxygen are) nor as product (iron oxide (FeO) plus sulphur dioxide are)
Hydrogen
A gas H2S evolves.
I goes all gloppy and odd
Iron sulphide and water and carbon dioxide!
When iron sulfide reacts with dilute sulfuric acid, iron sulfate, hydrogen sulfide gas, and water are produced. The overall reaction can be represented as: FeS + H2SO4 -> FeSO4 + H2S + H2O
Iron(II) sulphide: FeS. Iron sulphide is a synonym, but the first expression is more correct. Iron(III) sulphide: Fe2S3. Other forms of natural iron sulphides are known: see the link below.
The two possible formulaunits for Iron Sulfide are; FeS, and Fe1S1
iron sulphide is FeS while rust is oxide of iron Fe2O3.
Iron Sulphide
It is Paxton
iron oxide