Question

question 2
choose the physical change
slicing a watermelon
burning a metal
formation of a precipitate in a mixture
roasting marshmallows over a fire

Explanation:

A physical change alters the form or appearance of a substance without changing its chemical composition. Slicing a watermelon only changes its physical shape and size. Formation of a precipitate, burning a metal, and roasting marshmallows involve chemical reactions that change the chemical nature of substances.

Answer:

Slicing a watermelon