It is a compound
homogeneous
Heterogeneous mixture
NO. It's a compound
Each crystallic particle is pure NaCl, homogeneous.
It is a compound
salt water is homogeneous if the salt is completely dissolved. however if the salt appears to be unmixed then it is heterogeneous (E.G: if the salt crystals are large)
carbon is an element
It is a pure compound, not a mixture at all.
Homogeneous
The difference between heterogeneous and homogenous mixture is that in homogenous the compound totally dissolves and we cannot determine the compounds as water and sodium chloride ( salt ).and heterogeneous mixture totally describes the compounds present in it. For example : biryani .
The ferric oxide is a chemical compound.
A salt is a chemical compound.