6.4.1: The nuclear atom Flashcards
(6 cards)
1
Q
Plum-pudding model
A
A disproved theoretical model of the atom where the negative charges where embedded in a uniform volume of positive charge
2
Q
Proton number
A
Aka atomic number
number of protons in a nucleus
3
Q
Nucleon number
A
Total number of nucleons (protons + neutrons) in a nucleus
4
Q
Isotope
A
Nuclei of the same element that have the same proton number but different nucleon numbers. This is caused by different numbers of neutrons in each nucleus
5
Q
Atomic mass unit
A
1u = 1.661 x10 ^-27
1u is 1/12th the mass of a carbon-12 atom
6
Q
Strong nuclear force
A
One of the four fundamental forces that holds the nucleus together
Repulsive below 0.5fm and attractive between 0.5fm and 3fm
