Democritus, Indivisible and indestructible (false), different shapes (false), different sizes (true), John Dalton, Atoms can't be created or destroyed (true), Building block of matter (true), Ratios (true), Atoms of the same element are identical (false), solid sphere model (false), J. J. Thompson, Discovered electron (true), Plum pudding Model, No nucleus, protons, or neutron, Ernest Rutherford, Gold foil experiment, Atoms have a dense, positively charged center (true), Most of the atom is empty space (true), No proton or neutron, Neils Bohr, Electron in energy levels (true), locked in orbit (false)

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