Question

what do these two changes have in common? adding dish soap to water in a sink rain forming in a cloud select all that apply. both are changes of state. both are only physical changes. both are caused by heating. both conserve mass.

Explanation:

Adding dish - soap to water in a sink is a physical change as it is a mixture formation without a chemical reaction. Rain forming in a cloud is also a physical change involving the condensation of water vapor. In both cases, mass is conserved according to the law of conservation of mass. There is no new substance formed in either process. Adding dish - soap doesn't cause a state change and rain formation is due to cooling (condensation) not heating.

Answer:

Both are only physical changes.
Both conserve mass.