Which of the following is an example of work being done on an object?
A.
A prism splits white light into many different colors.
B.
A large piece of machinery rests on the floor.
C.
A man pushes a large couch across the room.
D.
A small box sits on the top self of a bookshelf.

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.