Question

Define dissolving. Is it a physical change?

Answer 1

Dissolving:

(1) Dissolving is a process in which a solid, liquid or gas mixes uniformly with another substance to form a solution.

(2) Yes, dissolving is a physical change because, for example, when we dissolve sugar in water, the sugar particles spread out and form a solution with water. This process can be reversed by evaporating water and collecting the sugar.