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all material bodies are made up of indivisibly small atoms. -
the deductive validity of any argument can be determined by its structure rather than its content -
there are only five solid shapes whose sides are made from regular polygons -
The major finding is invented experimental techniques (distillation, for example) and laboratory tools -
Lavoisier major finding is determined that oxygen was a key substance in combustion -
John Dalton. His major finding is oxygen combined with either one or two volumes of nitric oxide in closed vessels over water. -
when the elements are arranged in ascending order of atomic mass, every eighth element has comparable properties -
Periodic table. Major finding when all the known chemical elements were arranged in order of increasing atomic weight, the resulting table displayed a recurring pattern -
electrical spark passing between two spheres would occur more readily -
the atom was neither indivisible nor immutable. -
all atoms contain tiny negatively charged subatomic particles or electrons -
Thomson's plum pudding model of the atom had negatively-charged electrons embedded within a positively-charged -
a tiny, dense nucleus was causing the deflections. -
Major finding is accurate determination of the charge carried by an electron -
The major finding is the atomic number is the number of positive charges in the atomic nucleus -
Electrons orbit the nucleus in orbits that have a set size and energy -
a nuclear reaction which led to the first 'splitting' of the atom -
Electron charge, Millikan Oil Drop Experiment -
The fundamental equation of the science of submicroscopic phenomena known as quantum mechanics -
we cannot know both the position and speed of a particle, such as a photon or electron, with perfect accuracy -
central to the extraordinary developments in atomic physics in the first half of the 20th century -
Different atoms and molecules can emit or absorb energy in discrete quantities only -
Albert Einstein. His major finding is the photoelectric effect.