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Flashcards do conjunto (5)
- 1Democritus400BC
All substances consisted if indestructible particles called atoms - 2Dalton1808
all matter consisted of atoms
atom could not be divided
atoms of the same element are alike
atoms are combined in simple two number ratios - 3Rutherford1911
mostly empty space
dense nucleus of positively charged protons and electrons orbiting nucleus
electrons will eventually lose energy and spiral in towards the nucleus - 4Niels Bohr1913
electron orbits in different levels and can change depending on how much energy they have
didn't explain all known facts - 5James Chadwick1932
Discovered all known facts about the atom
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- Chemistry (Yr 9) FlashCards sobre Sem título, criado por bpmulley em 10-05-2015.
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- bpmulley
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