What is the result of cooled, solidified lava?

Endeleev saw trends in the physical and chemical properties of elements when he organized them by

Can someone me with questions 15 to 17 plz.

Which is true of a liquid? it has a definite volume but not a definite mass.it has a definite mass but not a definite volume.it has a definite volume but not a definite shape.it has a definite shape but not a definite volume.