Question

if you leave metal out in the rain, and it rusts, is that a physical change or a chemical change?
chemical change
physical change
rewatch

Explanation:

A chemical change occurs when a substance undergoes a transformation that results in a new substance with different chemical properties. Rusting of metal is a chemical reaction where iron reacts with oxygen and water to form iron oxide (rust), a new substance. A physical change only affects the physical appearance or state of a substance without changing its chemical composition.

Answer:

Chemical change