Question

what do these two changes have in common? ice crystals forming on a window water boiling on a stove select all that apply. both are only physical changes. both are caused by heating. both are caused by cooling. both are chemical changes.

Explanation:

Water boiling is a physical change where water changes from liquid to gas due to heating. Ice - crystal formation is also a physical change where water changes from liquid to solid due to cooling. Physical changes involve changes in state without altering the chemical composition of the substance.

Answer:

Both are only physical changes.