Question

this type of substance can be either homogeneous or heterogeneous.
mixture
compound
element
atom
question 7
1 pts
when a substance’s appearance changes but the substance’s identity remains the same, it is called a
select
change.

Explanation:

The question is about a type of change where a substance's appearance changes but its identity remains the same. This is a physical change, as physical changes involve alterations in physical properties (like appearance) without changing the substance's chemical identity. The other options (mixture, compound, element, atom) relate to matter classification, not change types. So the correct term for this change is "physical" (assuming the dropdown has "physical" as an option, as the context is about changes in appearance without identity change, which is a physical change).

Answer:

physical (assuming the dropdown option is "physical"; if the original problem's dropdown has "physical" as the correct choice for the change type when appearance changes but identity stays the same)