Neptunium is a chemical element.
Concrete is a heterogeneous mixture composed of cement, sand, gravel, and water. It is not an element or a compound.
heterogeneous
Silicon is an element.
Heterogeneous
heterogeneous
It is a heterogeneous mixture.
It is a heterogeneous mixture.
Concrete is a heterogeneous mixture.
it is a heterogeneous
Heterogeneous mixture.
its a heterogeneous mixture
Water is a compound. it is neither element nor mixture.