P2.5 Radioactivity

HideShow resource information
  • Created by: lottiecd
  • Created on: 13-04-14 14:01

Rutherford and Marsden: The Nuclear Model Of an Atom:

  • Fired a beam of alpha particles at thin gold foil.
  • Most went through but the occasional one came straight back at them.
  • Realised that most of the mass of the atom was centered at the nucleus. 
  • Showed that most of an atom was empty space.

PROTON: MASS 1, CHARGE +1

NEUTRON: MASS 1, CHARGE 0

ELECTRON: MASS 1/2000(v.small), CHARGE -1

  • Atoms have no overall charge
  • Number of protons is equal to the number…

Comments

No comments have yet been made

Similar Physics resources:

See all Physics resources »See all Radioactivity resources »