Question

If a substance has a large mass and a small volume how dense is it

Answer 1

Answer:

Very dense.

Explanation:

Conceptually, you are taking a large amount of atoms and putting them into a small container.  This means the spaces between atoms has to be smaller and the substance is more dense. (see image)

Mathematically, the equation for density is mass divided by volume ($Density=\frac{m}{v}$ ). If you divide a big number by a small number, you still have  a pretty big number (ex 4/2=2 versus 6/1=6)