Question

Hey, guys.
I've gotten answers to these questions, but my program still says that I'm wrong. Could anyone see where I screwed up on these answers?

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.

In a reaction, the mass of the products must equal the mass of the reactants. (None of these)

The magnitude of an electron's charge (Millikan)

The charge to mass ratio of an electron (Thompson)

Answer 1

An electron has a mass that is very small compared to the size of the atom (Thompson)

Any sample of a chemical compound will contain the same elements in the same proportions (None of these)

Most of an atom is empty space (Rutherford)

Electrons are negatively charged piece of matter (Thompson)

Neutrons are particles with no charge (None of these)

Answer 2

i could not get what exactly u need ?

Answer 3

I'm trying to figure out which scientist figured out which things. I seem to have something wrong, because my homework program isn't accepting my answers.

Answer 4

So I need to find out which one that is incorrect. I only have one more try ; w ;

Answer 5

An electron has a mass that is very small compared to the size of the atom - rutherford

Answer 6

Is everything else correct then?

Answer 7

haven't u read all three experiment :) i guess all are true u ust try it let us see

Answer 8

I have read on them, just a very long time ago >.<

Answer 9

but now u should read them and answer :) i think others are true except this one

Answer 10

Nope, didn't get it. :( Thank you for your help, though.