a nucleus

a beta particle

an electron

a proton

It was smaller than originally thought

It could flow through solid matter

There had to be a heavy mass of positive charge in the center

That atoms are following some set of rules that govern how they combine into compounds

We cannot make new compounds because that would cause a change in composition

It explained why everyday objects did not suddenly change form

It implied an underlying structure to the way protons interacted with neutrons

the shape of the orbital is circular

the shape of the orbital is figure 8

there are six electrons

it is neutral

158

232

248

264

1.20x10²⁴ atoms C

6.02x10²³ atoms C

3.01x10²³ atoms C

1.50x10²³ atoms C

17

18

35

52