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What did John Dalton first call the atom in 1803?
Solid spheres that differ depending on the element.
In 1897, what was Thomson’s atomic model called and what did it consist of?
The plum pudding model
It consisted of electrons suspended in a positively charged field.
What was Rutherford’s gold foil experiment and what was concluded about the atom?
Alpha particles were fired at a thin sheet of gold foil.
Most alpha particles passed straight through the gold atoms, and some were deflected
The conclusion was that the atom had a concentrated positive nucleus in the centre of an atom, surrounded by a cloud of electrons. The atom is mostly empty space.
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