Question

В воде растворяется соль,мука,растительное масло,речной песок?

Answer 1

Не растворяется раст.масло и речной песок.

Answer 2

Solubility of Substances in Water

In water, various substances have different solubilities. Let's explore the solubility of salt, flour, vegetable oil, and river sand in water.

Salt: Salt, or sodium chloride (NaCl), is highly soluble in water. When added to water, it dissociates into its ions, sodium (Na⁺) and chloride (Cl⁻), making it readily soluble.

Flour: Flour, being primarily composed of starch and protein, does not dissolve in water. Instead, it forms a suspension in water, where the particles are dispersed but not truly dissolved.

Vegetable Oil: Vegetable oil is not soluble in water. This is due to the non-polar nature of oil molecules, which prevents them from forming favorable interactions with the polar water molecules.

River Sand: River sand, primarily composed of silica (SiO₂), is insoluble in water. The strong covalent bonds in silica prevent it from dissolving in water.