What is a physical change

Answer 1

A physical change is a type of change that occurs in a substance without changing its chemical composition. It typically involves a change in the physical characteristics of a substance, such as shape, size, state of matter (solid, liquid, gas), or phase transition (melting, freezing, boiling). In a physical change, the substance remains the same at the molecular level. Examples of physical changes include crushing a can, melting ice, boiling water, dissolving sugar in water, or changing the state of matter of a substance.