-
500 BCE
plato
Plato introduced the atomic theory in which ideal geometric forms serve as atoms -
460 BCE
democritus
Greak philosopher and hypothesized the atom -
1400
the alchemists
they were some of the first people to think of atoms. and believed that you could make all materials were made from mercury and sulfur. -
Robert Boyle
he said that water was made of Tiney particles called corpuscle or atoms as we know them today -
Amedeo Avogadro
In 1811, he proposed Avogadro's law, which states that equal volumes of gases at equal temperature and pressure contain the same number of particles. -
Antone Lavoisier
French chemist he contributed to the creation of the atomic model. -
john Dalton
he was a English physicist how proposed the modern-day atomic theory. -
billiard ball model
was a model of an atom with a ball like shape. -
Dmitri Mendeleev
Dmitri Mendeleev is known for his discovery of the periodic law, which states that when elements are arranged in order of increasing atomic weight -
Ernes Rutherfordt
he discovered that there was a dense nucleus with electrons suronding. -
albert einstein
a germen physicist how mathematically proved the existence of atoms. -
JJ Thompson
the discovery of the electron -
solar system model
solar system model is a model of an atom that was called that because it made it loke like the electrons are orbiting the nucleus. -
Pierre and Marie curie
they hypothesized that radiation practical's brake down and destroy atoms. -
plum pudding model
was a model of an atom This model suggested that the atom was a uniform, positively charged sphere with negatively charged electrons inside of the sphere. -
henry G.J. Mosely
he discovered that Propeties of an element are determined by their number not by their Wate. -
Erwin Schrodinger
He used mathematical equations to describe the probability of finding an electron in a certain position, rather than fixed orbits -
electron cloud model
is a model of an atom where the electrons are surrounding the nucleus of the atom in something that looks like a cloud. -
Niels Bohr
he was a Danish physicist he made important contributions to the atomic structure. -
Robert Millikan
he counted the value of the elementary charge. -
james chadwich
he discovered the neutron