chem ch 3

ions are

charged atoms

cathode rays are beams of

electrons

electrolyte

conducts electricity when melted or put into solution

jj thomson by measuring deflection of cathode rays in fields

ratio of mass to charge for the electron

millikans oil drop apparatus determines which property of electron

charge

cathode

negative electrode

anode

positive electrode

this person won two nobel prizes for radioactivity

marie sklodowska curie

He²+

alpha

which radioactivity is not deflected by magnetic field and has essnetially no mass

gamma

radioactivity with negative charge AND is an electron

beta

nuclear model of an atom constructed from what expirement

alpha particle scattering by thin metal foils

nuclear nature of the atom was postulated by

rutherford

essentially all the mass of an atom is due to the

nucleons

mass of the electrons in atoms is regarded as

insignificant

mass of a nucleon

1 atomic mass unit (u)

nucleon number

protons + neutrons

max number of electrons in n=3 energy level

18