This is a very unspecific question, the amount of matter in a given space depends on what's in that space, and how much of it there is (as well as how dense it is).
The amount of matter is given space is mass.
No, mass is not the amount of matter in a given space. It is actually density.
density
Density.
density
The amount of matter is given space is mass.
is a measure of the amount of matter in a given amount of space
is a measure of the amount of matter in a given amount of space
is a measure of the amount of matter in a given amount of space
Density is the amount of matter in a given space.
No, mass is not the amount of matter in a given space. It is actually density.
The amount of matter in a given volume of space is called density.
density
density
density
Density.
Density, I think