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95567
Atomic Theory
Description
GCSE Chemistry (Atomic Structure) Mind Map on Atomic Theory, created by hannah-lewis on 17/05/2013.
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atomic structure
chemistry
chemistry
atomic structure
gcse
Mind Map by
hannah-lewis
, updated more than 1 year ago
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Created by
hannah-lewis
over 11 years ago
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Resource summary
Atomic Theory
John Dalton
1808
"All atoms are made up of small individual particles"
Atoms of the same element are identical
atoms rearranged in a chemical reaction
Compounds are 2 or more atoms together
J.J Thomson
1987
Electron
Plum Pudding
negative electrons in a sphere of positive
Atom is neutral
Ernest Rutherford
1913
discovery of nucleus
Protons = Electrons
electrons are around a positive nucleus
protons are 2000 times heavier than electrons
most mass is in the nucleus
James Chadwick
1932
neutron
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