Question

under a third set of conditions, the sample depicted in c changes to that in d. does this represent a chemical change, a physical change, or both? check all that apply. physical change chemical change none of the above part 4 of 4

Explanation:

A physical change alters the form or appearance of a substance without changing its chemical composition. A chemical change results in the formation of new substances with different chemical properties. Without seeing the actual samples C and D, we rely on these basic definitions to categorize the change.

Answer:

It depends on whether new substances are formed. If only the form or state changes (like melting, freezing, etc.), it's a physical change. If new substances are created, it's a chemical change. Without more details about the samples, we can't definitively check any of the boxes.