Atomic Structure Flashcards
1
Q
RAM of
Proton
Neutron
Electron
A
1
1
0.0005
2
Q
Charge of
Proton
Neutron
Electron
A
+1
0
-1
3
Q
Mass number
Atomic number
A
protons+neutrons
protons
4
Q
What is an isotope
A
same element, different number of neutrons.
5
Q
John Dalton
A
All matter is made up of atoms, the smallest thing possible
6
Q
JJ Thomson
A
Discovered electrons therefore atoms are not the smallest matter.
The Plum Pudding Model which was a model of a positive matrix embedded with electrons.
7
Q
Ernest Rutherford
A
Discovered the nucleus of an atom and electrons orbiting it.
8
Q
Neils Bohr
A
Electrons orbit at a specific distance from the atom.
9
Q
James Chadwick
A
Neutrons in the nucleus
