Depends on whether you leave the steel wool in the Pepsi. If you take it out, the water in the Pepsi will cause the steel wool to rust away. If you leave it in, the phosphoric acid will slowly dissolve the steel wool.
thin steel wool
steel wool is steel made from wool, so it would be neither
the wool does not rust
Steel wool is a mixture.
The steel wool gets wet. If you take the steel wool out (into the air) again it will rust.
Steel wool is a Mixture-Mechanical
Steel wool
Melting the steel wool is a physical change.
steel wool dome @#$%
if you put steel wool at the tip of a 9 volt battery
Copper is deposed on the steel wool.
steel is made from a mixture of iron and carbon so yes, steel wool definitely has iron in it