Forming Ions

Question 1

What is the equation for the mass of an atom?

Answer 1

Mass of atom = Relative atomic mass / Avogadro constant (6.02 x10^23)

Question 2

History of the atom first person?

Answer 2

JJ Thompson, figured out that there are negative particles that exist on atoms called electrons. Came up with the plum pudding model. Has a solid nucleus.

Question 3

History of the atom second person?

Answer 3

Rutherford and Marsden, Alpha scattering experiment, shot alpha particles into a gold foil, figured out that there is a lot of space between the nucleus of the atom and the electrons, figured out that there is a positive nucleus, figured out that the nucleus is really small compared to the rest of the atom.

Question 4

History of the atom third person?

Answer 4

Bohr, electrons orbit at specific points called shells or energy levels.

Question 5

History of the atom fourth person?

Answer 5

Chadwick, found out there are neutrons.