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Democritus
He formulated the first atomic theory. He discovered the atom. -
Robert Boyle
He discovered the relationship between volume, pressure, and gases. -
Antoine Lavoiser
He came up with the law of conservation that states matter can not be destroyed or made. He discovered this through an exoeriment in which he coverted HgO into Hg+O. -
John Dalton
He discovered many things about the atom but these were the most important, all matter is made of tiny particles, atoms are indestructable and interchangeable, elements are characterized by the mass of their atoms, when elements react, their atoms cobine in simple, whole-number ratios. -
Dmitri Mendeleev
He formulated the periodic law. He also created his own version of the periodic table. -
Eugene Goldstien
He discovered the proton. He did an experiment in which cothode tubes nocked electrons off the atom and attracted the postivly charged electrode. -
JJ Thomson
His atomic theory identified that electrons inside an atom coul;d show, so atoms weren't invisible. -
Niels Bohr
Bohr's greatest contribution to the understanding of the atom was when he created a model of the atom which showed a povitively charged nucleaus surrounded by electrons. This won hin the nobel prize in 1922. -
Robert Millikan
He did the oil drop experiment to learn that the electron has a negative charge. -
Henry Moseley
He made quantitative contributions to the periodic table by adding the concept of atomic numbers and Moseley's Law. This law was used to put the elements in a logicla order. -
Ernest Rutherford
He discovered that there was somthing very dense and positively charged int he atom and it is called the nucleus. He also discovered that the atom is made up of mostly empty space, he discovered this all through his gold fail experiment. -
Erwin Schrodinger
He formulated the wave equation.He was also and author in the field of physics. -
James Chadwick
He discovered the neutron and discoveed it was located in the nucleus along with protrons.
