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History of Atoms

Terms

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Bohr
He's danish
rutherford
he gave the center of the atom the name "nucleus"
bohr
electrons move in definite orbits around the nucleus
Dalton
all elements are composed of atoms. Atoms are indivisible and indestructible particles
indivisible
What does "Atomos" mean?
bohr
these orbits ( energy levels ) are located at certain distances from the nucleus
rutherford
conclusion - atoms have small, dense, positively charged center.
thomson
reasoned there was also a positively charged in the atom
democritus
atoms were small, hard particles
democritus
there's an infinite number of atoms
schrodinger
this includes the wave function
wave
invovles complex mathematical calculations
thomson
call the new particles " corpsules "
thomson
Discovered the "Plum Pudding" design in 1897
Dalton
Atoms of the same element are exactly alike
wave
based on wave mechanics
dalton
Who was the english guy who performed experiments that lead to the acceptance of atoms?
1908
What year was rutherford's model?
Dalton
Compounds are formed by joining of atoms of two or more elements
Dalton
Atoms of different elements are different
heisenburg
famous for the uncertainty principle
wave
defines the s,p,d, and f energy levels of atoms
rutherford
most particles pass through the foil
thomson
discovered negatively charged particles (electrons) by passing the electric current through a neutrally charged gas. The gas emitted negatively charged particles
Thomson
atoms are made of smaller particles
schrodinger
developed the equation that governs the entire quaritum state of atoms
heisenburg
you either know the positive or the momentum of an electron, but not both
rutherford
experimented by shooting positively charged particles through a thin piece of gold foil
Bohr
plays each electron in a specific energy level
rutherford
some particles bounced back
1803
What year was Dalton's atom model created?
democritus
they are always moving and could join together
Democritus
believed atoms were the smallest piece of matter
democritus
all atoms are made up of the same material but with different shapes & sizes

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