Chemistr I H Unit III
His model is compared to plum pudding.
The positive charge is localized in the center.
An atom contains negative particles called electrons.
An atom has its mass distributed nearly uniformly.
Bend very little when passing between plates of different charge
Bend a lot when passing between plates of different charge
Pass between charged plates with no deflection
Stop between charged plates
By losing or gaining electrons
By losing or gaining neutrons
By losing or gaining protons
By ejecting beta particles from the nucleus
It is positively charged.
It is negatively charged.
It can be blocked with a piece of paper.
It is the most penetrating type of radioactivity.
Very few of the positive particles were greatly deflected back.
Most of the positive particles were greatly deflected back.
Most of the positive particles were absorbed by the gold.
Most of the positive particles dropped to the bottom of the gold foil.
Total particles in the nucleus
12 protons, 25 neutrons and 12 electrons
12 protons, 13 neutrons and 12 electrons
25 protons, 12 neutrons and 25 electrons
13 protons, 12 neutrons and 12 electrons
Nearly the same as the mass of an electron
Nearly the same as twice the mass of a neutron
Nearly the same as the mass of a neutron
Nearly the mass of an alpha particle
Here's an interesting quiz for you.