Help plz I really really need the help as soon as possible!!!

Asolid that forms and separates from a liquid mixture is called

Is a pencil falling to the floor anon contact force, a force, or a contact force

Scientists have developed an explanation of a phenomenon from several verified hypotheses. the explanation has been confirmed through numerous experimental tests.which option best describes this explanation? a. scientific lawb. research questionc. hypothesisd. scientific theory