With liquids you can just stick in a thermometer into it. But with solids sometimes you can't do that (because it's solid obviously) so I guess measuring liquids is more accurate in most cases.
is there a chemical difference between the solid and liquid states of nitrogen
What is the difference between solid and gas in terms of their fluidity
A solid and liquid have the same mass if the amount is the same.
temperature
the only difference is the energy of the atoms
The atoms in a solid are in a tighter formation that as they are in a liquid. In a liquid, They are loose and have the ability to pour.
The molecules in a solid vibrate in place. The molecules of a liquid are moving about.
Urine is liquid Feces are solid
Because liquid and solid are two different things
one is solid and one is liquid
supernatant - liquid above and solid in the bottom, the supernatant is the liquid above that is going to be poured off (to separate the solid and the liquid) filtrate - it is also the liquid part but the solid and liquid is separated differently, for example coffee the filter paper holds on to residue (solid) and the liquid part (filtrate) passes I think that is the difference.
The difference between regular geometry and solid geometry is that regular geometry deals with angles, measuring angles, and theorem/postulates. Solid geometry deals with shapes and multiple sided figures.