atomic structure Flashcards
who created the plum pudding model
j j thompson
what was the theory that led to the plum pudding model
the idea that atoms consist of a ball with a positive charge with negative electrons within it
what is ionization
when electrons absorb enough energy to leave an atom
what do alpha particles consist of
2 protons and 2 neutrons
what nucleus does an alpha particle have the same as
helium nucleus
how many electrons does an alpha particle have and what charge
0 electrons and a charge of +2
what does a beta particle consist of
one proton
what does a gamma ray consist of
electromagnetic radiation
what change does a beta particle have
negative
what charge does a gamma ray have
no charge
what causes the emission of a neutron
if a nucleus has too many neutrons making it unstable
which type of particle can’t penetrate paper
an alpha particle
what is the source of the beta particle
a neutron decaying into a proton and an electron
what particle is strongly ionizing
alpha particle
which particle is weakly ionizing
beta particle
