Performed the Gold Foil experiment and found the nucleus!
Who is Rutherford?
He-3 and He-4
What are isotopes?
What is Hydrogen-1 with 1 Proton, 1 Neutron and 1 electron?
Dalton showed that "basic elements" like water and air actually broke down into more basic particles. Leading him to propose this model of the atom.
What is the Billiard ball model?
19F and 19F-
What is an anion?
146C-
What is Carbon-14, with 6-P, 8-N, & 6-E?
Found the electron and gave us the Plum Pudding model with his Cathode Ray Tube experiment.
Who is Thompson?
Sodium-23(+) and Sodium-24
What is an isotope and a cation?
Magnesium-26
12-P, 14-N, & 14-E
What is 2612Mg-2?
Discovered the mass/exact charge of the electron. Give name and experiment!
Who is Millikan with the Oil Drop experiment?
One atom has 23-P & E and 28-N for a mass # of 51, while another atom has 23 P, E and N for a mass # of 46.
What are isotopes?
Argon-39
What is 3918Ar?
Theorized atoms/matter cannot be created or destroyed and that all elements had specific proportions.
Who is Dalton?
157X and 156X+
What are different elements?
Has a mass number of 31 with 16 neutrons and 16 electrons.
What is 3115P- ?