What are examples of insoluble items?

Answer 1

Insoluble solid materials are materials in solvents that are carried in them in suspension rather than solution. Suspended materials can come out of suspension, can precipitate, under certain conditons. The best example on a large scale may be a river. It carries stuff in it in suspension, and some have so much insoluble solid material in them they look brown. But near the mouth of the river, the insoluble material, this silt, can precipitate out and form a delta. The actual insoluble material can vary over an extremely wide range of "stuff" depending on what solvent and where we're looking at it. In the lab, we'd have a good chance of knowing what the insoluble solid material was by looking at our experiment. In the lab, we have to deal with both a suspension and a colloid. Both have a fluid solvent that "holds" the finely divided materials, but in a suspension, the material can precipitate out. In a colloid, like milk, the particles in it won't precipitate. Chemistry and geology (hydrology, a sub-specialty), address the nature of insoluble solid materials in the course of study.

Answer 2

Examples of some insoluble materails are water and paint/petroleum jelly/oil/permanet ink and nail polish.

Answer 3

Metal hydroxide (example calcium hydroxide and sodium hydroxide).

Answer 4

The most immediate example of an insoluble item is oil and water. Gravel is insoluble in water. Soluble items will have like polarity and structure of their molecules.

Answer 5

sand

oil

ghee

flour

stones

gravel

lead