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atoms were uniform ,solid, hard, incompressible, and there hard. -
Describes atoms as consisting of a nucleus with a number of electrons in orbits around that nucleus -
Solid forms of matter are composed of individual elements shaped like triangles -
That all metals were formed from two principles (Mercury and Sulfar) -
He believed that everything was composed of very tiny proporties -
Grounded in the law of conversation of mass exploring matter was converted during chemical changes -
Discovered the atomic theroy all matter was compressed of indivisible and indestructible atoms -
He defined an atom to be a ball-like structure as the concepts of the atomic nucleus and electrons were unknown at the time -
Equals volumes opf gases of the same temperature and pressure contain the same number of molecules -
Elements arranged according to the value of their atomic weights. -
Composed the plum pudding model of the atom. (soap) -
Discovered the strongly radioactive elements and radium which occur naturally in minerals. -
Depects the electrons as a negatively charged particles embedded in a sea of positive charge -
proved the existence of atoms. Any liquid is made up of particles -
That electron did have a discrete, even charge -
Described atom as having tiny, decease charged core called the nucleus -
Theory for the hydrogen atom. Some physical quantities only take discrete values -
Frequency of the x-ray by an atom is proportional to its atomic number -
Shows a practicular area in which an electron is likely to be -
the behavior of electrons within atoms could be explained by treating them mathematically as matter waves. -
Discovery of the neutron