Atomic structure Flashcards
Revise
Who made the plum pudding model?
JJ Thompson
Where is the negative charge in the plum pudding model?
Doted within (plums)
What did JJ Thompson discover?
Electrons
Where is the positive charge in the plum pudding model?
Throughout the structure
What experiment did Rutherford do?
Fired alpha particles at gold foil
What model did Rutherford propose?
Nuclear model
What model did Niels Bohr discover ?
Energy level model
In Bohrs model of the atom where are the electrons?
In the shells
What is the charge on a neutron
0
What is the charge of an electron
-1
What dose the mass number tell you?
Number of protons + number of neutrons
Number of protons is the same as…
Number of electrons
What does group number on the periodic table mean?
How many electrons are on the most outer shell
What makes an atom stable?
A full outer shell
What is an ion?
An ion is an atom which has lost or gained electrons
