What is the correct way of saying the following?

1 Do solids take up more space than liquids?

2 Do solids have more volume than liquids?

3 If I were to fill up a blender with solids to the brim, is there any way it would overflow once liquid?



#1 and #2 are both grammatically correct and are equivalent. However, they are meaningless questions, because you haven't specified the quantity of the substance.

Perhaps what you want to ask is, "Does a solid take up more space than a liquid of the same mass?" Or perhaps you want to ask, "Does a substance take up more space when in solid or liquid form?"

#3 is gramatically correct. It might be clearer if it ended, "overflow after melting into a liquid."