Chemicals dissolved in water. Calcite is a good example, if I'm not mistaken.
I don’t understand your questions can you elaborate
Measuring the surface of an oil painting and finding its dimensions 12 to be 12 inches
There’s no picture if you meant to add a picture
Answer/Explanation:
Wood: E
Freshly brewed black coffee: O
Water: O
Lucky Charms: E
Salt: O
Dirt: E
Sausage and mushroom pizza: E
Air: O
Milk: O
Gold: O
Any mixture that looks the same through the substance is homogenous. The different parts are unable to be visibly seen. (Any periodic element is homogenous)
Any mixture that can be easily determined a mix and cannot be evenly separated or dispersed is heterogenous.