Question

question 2
which of the following statements best describes why a chemical change is different from a physical change?
chemical changes impact an appearance or form of a substance while physical changes affect the identity of the substance.
chemical changes can only occur in a laboratory while physical changes can happen anywhere.
chemical changes involve formation of a new substance while physical change only impacts appearance or form.
during a chemical change, you may see a change in color or temperature, but physical changes will never change color or temperature.

Explanation:

A chemical change results in the formation of new substances with different chemical properties. For example, when iron rusts (a chemical change), iron oxide is formed. A physical change, like melting ice (water changing from solid to liquid), only alters the form or appearance of a substance, not its chemical identity.

Answer:

Chemical changes involve formation of a new substance while physical change only impacts appearance or form.