[jooliahh]

HELP!
-please?


Decide if each of the following principles were first discovered during Thompson's cathode ray tube experiments, Rutherford's gold foil experiment, Millikan's oil drop experiment or none of these. Label each appropriately.

~Neutrons are a particle with no charge.
~In a reaction, the mass of the products must equal the mass of the reactants.
~The charge to mass ratio of an electron
~the magnitude of an electron's charge
~An electron has a mass that is very small compared to the size of the atom.
~Any sample of a chemical compound will contain the same elements in the same proportions.
~An atom has a nucleus that is very small
~Electrons are negatively charge pieces of matter.


T---T
Online homework.
I'm down to my last try.. .
D:
My teach didn't even teach us this!
He just gave us the work and expects us to do this!