Atoms, Isotopes, etc... Flashcards
1
Q
How to find average atomic mass
A
Change percentages to decimals
Multiply decimals by masses
Add results
2
Q
Plum-pudding Model
A
Though negatively charged particles were randomly embedded in positively charged sphere
3
Q
Rutherford Model
A
Atom has positive nucleus + most of atom is negative space
4
Q
The nucleus is
A
Small and contains most of the atoms mass
5
Q
Discovery/Theory order
A
Atom is a hard sphere - atom is mostly empty space - electrons exists in orbitals around the nucleus
6
Q
Isotopes
A
Diff mass same Protons/electrons diff neutrons
