The atomic model of Dalton
(according to the theory of atoms in atomic Dalton current concepts and 1 3 4,, ใช้ไม่ได้ currently)
an 1 atom is not the smallest thing. Atom also contains electrons, protons, neutrons, particles, etc.!The 3 - 4 atoms of the same element physical properties are not the same, that is, not the same mass which will be continued on Thorpe "isolate"
plum-pudding model
- Thomson discovered electron
.Experiments of waiting for a bird, Andrew Milligan. Experimental results that electrons are charged only with 1.60 x 10 - 19 Coulomb And the electron mass equal to 9.11 x 10 - 28 G
* Goldstein, discover proton
.From the experimental results of Thomson Goldstein, Thomson atom more information about he proposed atomic model that
- atoms have a sphere
.- atom is not the smallest things. But the atom is composed of electrons and other particles
- atom consists of particles electron has a negative charge. Protons have a positive charge
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