atom is the smallest of all matter in science that made up everything.
solid matter is composed of tightly packed particles. a solid will retain its shape; the particles are not free to move around.
liquid matter is made of more loosely packed particles. it will take the shape of its container. particles can move about within a liquid, but they are packed densely enough that volume is maintained.
gaseous matter is composed of particles packed so loosely that it has neither a defined shape nor a defined volume. a gas can be compressed.
these are the freezing points of the 3:h2o =0 °cnacl =801 °chf =-83.6 °c
therefore, the highest freezing point between these 3 is the sodium chloride/nacl which freezing point is 801 °c.