Granite is a rock, a non-homogeneous mixture of minerals.
It is a pure substance.
pure substance
Pure Iron is considered as Homogeneous. Whereas, Iron with rust or other impurities is Heterogeneous.
Homogeneous mixture
water is pure so is homogeneous ice is pure so is homogeneous oil is pure so is homogeneous
Pure substance; it is one form of pure carbon.
CO2 is a pure substance and so is homogeneous. Hint: if it has a chemical formula then it is a pure substance.
Homogeneous mixture
It is not pure and it is not homogeneous.
no
Liquid gold-homogeneous Solid-heterogenous
Ca is an element. It is a pure substance, which, by definition, is homogeneous matter, but is not a mixture.