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Fråga		Svar
What did Democritus suggest? börja lära sig		Everything is made of tiny particles called atoms
What was Daltons model? börja lära sig		Atoms were tiny solid spheres and different elements had different atoms
What did J.J. Thomson discover? börja lära sig		The electron and plum pudding model
What was the plum pudding model? börja lära sig		A ball of positive charge with negative electrons embedded inside
What experiment did Rutherford carry out? börja lära sig		The gold foil alpha scattering experiment
What did Rutherford discover? börja lära sig		Atoms are mostly empty space within a small positive nucleus
What did Chadwick discover? börja lära sig		The neutron
What was the order of the history of the atom? börja lära sig		Democritus-idea of atoms, John Dalton-solid sphere model, J.J. Thomson-electron discovered + plum pudding model, Ernest Rutherford-nucleus, Niels Bohr-electrons in the shell, James Chadwick-neutron

Chemistry - History of the Atom