-
Proust's Atomic theory was that a given compound always has the same elements in the same proportion by mass.
-
Proust's Atomic theory was that a given compound always has the same elements in the same proportion by mass.
-
Daltons atomic thoery is that all matter is composed of atoms which are small and invisable.
-
Daltons atomic thoery is that all matter is composed of atoms which are small and invisable.
-
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.
-
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 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 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 studied uranium and thorium and called thier spontaneus decay process "radioactivity". She anf her husband Pierre also discovered radioactive elements.
-
Marie studied uranium and thorium and called thier spontaneus decay process "radioactivity". She anf her husband Pierre also discovered radioactive elements.
-
Thomson's atomic theory was that all atoms have negative change.
-
Thomson's atomic theory was that all atoms have negative change.
-
Geiger devoloped an electrical device to "click" when hit with alpha particles.
-
Geiger devoloped an electrical device to "click" when hit with alpha particles.
-
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 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 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 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 conducted the first controlled chain reaction releasing energy from the atoms nucleus.
-
Enrico conducted the first controlled chain reaction releasing energy from the atoms nucleus.
