Fired alpha particles at gold foil, discovered the positively charged nucleus (highest density)
Described electrons as a wave.
Discovered the electron, worked with cathode ray tube, proposed the plum pudding model.
2 True/False Questions
Niels Bohr → He proposed that matter is made up of small particles; atomos;which means indivisible. They are now called atoms. His ideas were based off logical thinking.
James Chadwick 1932 → mathematical equation, electrons have particle and wave characteristics, electrons only have certain probabilities of being located in electron cloud, orbitals are described regions of high probability of locating an electron