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Joseph Proust
Proust's Atomic theory was that a given compound always has the same elements in the same proportion by mass. -
Joseph Proust
Proust's Atomic theory was that a given compound always has the same elements in the same proportion by mass. -
John Dalton
Daltons atomic thoery is that all matter is composed of atoms which are small and invisable. -
John Dalton
Daltons atomic thoery is that all matter is composed of atoms which are small and invisable. -
Amedeo Avogadro
Avogadro came up with the idea that a specific tempture and pressure equal vloume of two gases will contain the same number of atoms and molecules. -
Amedeo Avogadro
Avogadro came up with the idea that a specific tempture and pressure equal vloume of two gases will contain the same number of atoms and molecules. -
Dmitri Mendeleev
Dmitri arranged elements into 7 groups with simliar properties. He discovered that properties of elements "were periodic functions of their atomic weight". This is know known as the periodic law. -
Dmitri Mendeleev
Dmitri arranged elements into 7 groups with simliar properties. He discovered that properties of elements "were periodic functions of their atomic weight". This is know known as the periodic law. -
Marie Curie
Marie studied uranium and thorium and called thier spontaneus decay process "radioactivity". She anf her husband Pierre also discovered radioactive elements. -
Marie Curie
Marie studied uranium and thorium and called thier spontaneus decay process "radioactivity". She anf her husband Pierre also discovered radioactive elements. -
J.J. Thomson
Thomson's atomic theory was that all atoms have negative change. -
J.J. Thomson
Thomson's atomic theory was that all atoms have negative change. -
Hans Geiger
Geiger devoloped an electrical device to "click" when hit with alpha particles. -
Hans Geiger
Geiger devoloped an electrical device to "click" when hit with alpha particles. -
Ernest Rutherford
Ernest discovered that using alpha particles as atomic bullets, probed the atoms in a peice of thin gold foil. He discovered that the nucleus was very dense, very small and positvily charged. he also found out that elctrons were located outside the nucleus. -
Ernest Rutherford
Ernest discovered that using alpha particles as atomic bullets, probed the atoms in a peice of thin gold foil. He discovered that the nucleus was very dense, very small and positvily charged. he also found out that elctrons were located outside the nucleus. -
Neil Bohr
Neil devoloped an explaination of atomic structure that underlines regvlarities of the periodic table of elements. his atomic model had atoms built up of sucessive orbital shells of electrons. -
Neil Bohr
Neil devoloped an explaination of atomic structure that underlines regvlarities of the periodic table of elements. his atomic model had atoms built up of sucessive orbital shells of electrons. -
Enrico Fermi
Enrico conducted the first controlled chain reaction releasing energy from the atoms nucleus. -
Enrico Fermi
Enrico conducted the first controlled chain reaction releasing energy from the atoms nucleus.
