Dalton gathered data from a series of experiments and developed a theory, which disproved the Greek idea that all matter is composed of some combination of earth, fire, wind and water. State the 4 main concepts developed by Dalton's work.

Asubstance is held in an open container. its particles move past one another at random speeds but do not leave the container. heat is removed from the system, and the particles slow down. when enough heat is removed, the particles no longer have enough speed to overcome the weak attractive forces between them. when this happens, the substance enters its solid state. the process described above is known as .