Question

what do these two changes have in common? crushing a mineral into powder building a tower out of magnetic blocks select all that apply. both are only physical changes. both are caused by heating. both are caused by cooling. both are chemical changes. identify physical and chemical changes compare thermal energy transfers not feeling ready yet? these can help work it out

Explanation:

Crushing a mineral into powder and building a tower out of magnetic blocks are physical changes. A physical change is a type of change in which the form of matter is altered but one substance is not transformed into another. In crushing a mineral, only its physical form (size and shape) is changed. Building a tower with magnetic blocks just arranges the blocks in a different spatial - configuration without changing their chemical composition. There is no heating, cooling, or chemical reaction involved in either case.

Answer:

Both are only physical changes.