homogeneous
Pure air is homogeneous because all components are completely miscible.
Since gold is an element and therefore a pure substance it is homogeneous.
homogeneous
CO2 is a pure substance and so is homogeneous. Hint: if it has a chemical formula then it is a pure substance.
Liquid gold-homogeneous Solid-heterogenous
Pure iron is homogeneous.
homogeneous
pure air is homogeneous but dusty air is heterogeneous
Pure air is homogeneous because all components are completely miscible.
Liquid gold-homogeneous Solid-heterogenous
Since gold is an element and therefore a pure substance it is homogeneous.
Wine is a homogeneous solution.
Gold is a pure element, not a mixture of any kind.White gold (alloy with nickel, manganese, or palladium) is a homogeneous mixture because you can't see the separate substances that are in it. Therefore it is a homogeneous mixture.
water is pure so is homogeneous ice is pure so is homogeneous oil is pure so is homogeneous
It is a pure substance.
Silver is not a homogeneous mixture or a heterogeneous mixture, it is a pure element. Silver does appear in homogeneous mixtures and heterogeneous mixtures such as sterling silver and silver nitrate.