term1 Definition1term2 Definition2term3 Definition3
Please sign in to your Google account to access your documents:
Charge of an atom
No overall charge.
Mass of a proton, neutron and electron
Proton: 1
Neutron: 1
Electron: very small
Size of an atom
Radius: 0.1nm (1×10•-10)
Niels Bohr
Adapted the atomic model suggesting a positively charged nucleus surrounded by orbiting electrons.
James Chadwick
Evidence to show existence of neutrons in nucleus.
Nucleus development
Experiments show nucleus is made of smaller charged particles.
Alpha particle scattering
The mass of an atom concentrated in centre, charged too.
Relative atomic mass
(mass × abundance) + (mass × abundance)
______________________________________
100
Need help typing ? See our FAQ (opens in new window)
Please sign in to create this set. We'll bring you back here when you are done.
Discard Changes Sign in
Please sign in to add to folders.
Sign in
Don't have an account? Sign Up »
You have created 2 folders. Please upgrade to Cram Premium to create hundreds of folders!