Steam is water in the gaseous phase - a compound.
No it is a solution
Heterogeneous mixture.
It is a heterogeneous mixture.
It is a heterogeneous mixture.
It is a heterogeneous mixture.
It is a heterogeneous mixture.
Aluminium is an element . it is not compound or mixture.
It is a heterogeneous mixture.
mixture
element
It is a heterogeneous mixture.
Heterogeneous