Question

which of the subtance is not soluble in water​

Answer 1

Answer:

Insoluble" generally means that a substance does not dissolve in water. Some examples include: sand, fats, wood, metals, and plastic. When we put them in water and try to mix them, they will not dissolve.

Explanation:

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Answer 2

Answer: Like dissolves like. Water is a polar molecule therefore, it will dissolve polar solutes such as, ionic compounds and polar molecular compounds. That is why, vitamin A is not soluble in water, However, vitamin C is soluble.

Explanation: "Insoluble" generally means that a substance does not dissolve in water. Some examples include: sand, fats, wood, metals, and plastic. When we put them in water and try to mix them, they will not dissolve.

Why do some substances dissolve in water and others don't?

It has to do with the structure of the water molecule. Oxygen has a greater attraction for electrons, so the shared electrons (bonding electrons) spend more time close to oxygen then to either of the hydrogens.