Question

which describes a feature of the physical changes of all substances?
can dissolve in water
can conduct heat and electricity
rearranges atoms to form new substances
does not change the identity of a substance

Explanation:

Physical changes are changes that affect the form of a substance but not its chemical composition. Dissolving in water and conducting heat/electricity are properties of only some substances, not all. Rearranging atoms to form new substances is a chemical change, not physical. The defining feature of physical changes for all substances is that the substance's identity remains unchanged.

Answer:

does not change the identity of a substance