Fontaine Chu, Krystal Xie and Ryan Yu POINTS

was a french physical chemist

work with her husband Frédéric Joliot-Curie

their discovery radioactive artificially

their discovery of the neutron and the positron

3 NEUTRON POINTS

Who arranged the elements into the periodic table?

3 NEUTRON POINTS

What was the name of J.J. Thomson’s model of an atom?

3 NEUTRON POINTS

Who used uranium salts to discover radioactivity?

3 NEUTRON POINTS

Which scientist discovered that radioactivity involves two emission of two kinds of particles: alpha and beta?

13 POINTS

Used his oil drop method for determining the charges in electrons
Successfully measured the charge of an electron
Oil drops were sprayed into the chamber and exposed to x rays, ionizing drops +’vely or -’vely
American Physicist