1. Oil and Fats: Oils and fats, such as vegetable oil, cooking oil, and grease, are generally immiscible with water. They form separate layers when mixed with water and do not dissolve.
2. Wax: Wax, like beeswax or candle wax, is insoluble in water. It floats on the surface of water and does not mix with it.
3. Organic solvents: Many organic solvents, such as benzene, toluene, and gasoline, do not dissolve in water. They form separate layers when mixed with water.
4. Alcohol with High Carbon Content: Higher carbon content alcohols like butanol and pentanol exhibit limited solubility in water compared to lower carbon alcohols like ethanol and methanol.
5. Polymers: Many polymers, such as polyethylene and polystyrene, are insoluble in water. They do not break down or disperse in water.
6. Minerals: Certain minerals, such as sand, quartz, and mica, are insoluble in water. They may form suspensions in water but do not dissolve.
7. Starch: Starch, a complex carbohydrate found in plants, is insoluble in cold water. It forms a gel-like substance when heated in water, but it does not truly dissolve.
8. Cellulose: Cellulose, a major component of plant cell walls, is insoluble in water. It is the main constituent of paper and cotton.
9. Some Salts: While many salts dissolve in water, some, like silver chloride (AgCl) and barium sulfate (BaSO4), are practically insoluble in water.
10. Gases: Gases like oxygen, nitrogen, and carbon dioxide are generally immiscible with water and do not dissolve to a great extent.
It's important to note that substances can exhibit varying degrees of solubility depending on the temperature, pH, and presence of other solutes in the water. Some substances may be slightly soluble or partially soluble, while others are practically insoluble under standard conditions.
