Nothing (unless you count electromagnetic and gravitational fields).
Because the space between atomic particles, atoms and molecules is empty.
Yes, although it is very limited due to atoms being very small. There is always some space between, even in solids.
cytoplasm
Molecules take up less space as they cool. The space contains more molecules.
of course! the space between atoms is always very small, but there is always spaces, even in solids
Lots of space between the atoms and molecules.
In solids, heat is the energy of vibrating molecules or atoms; the higher the temperature, the greater the vibration. And when molecules or atoms vibrate more, there will be more space between them.
Homogeneous solution
Homogeneous solution
Lots of space between atoms (or molecules, or ions).
Essentially yes - it is empty space. there may be some stray particles now and then but for the most part it is empty.
molecules and atoms
There is nothing that fills the space between neutrons and electrons. There may be a couple of other particles, but they do not come close to filling the space.
Yes, Outer Space Does Have Gravity! The apparent weightlessness of astronauts in space is not due to a lack of gravity; it is due to them essentially being in freefall. Gravity is the main force affecting the movement of objects in space.
matter
Because the space between atomic particles, atoms and molecules is empty.
Yes, although it is very limited due to atoms being very small. There is always some space between, even in solids.