Chapter 2 Flashcards
What did JJ Tompson do
He discovered the electron. Plum Pudding model
What did Dalton
He had the first principal of the atom. Solid sphere
What did Rutherford do
Atom is mostly empty space
What did the Bohr model do
Electrons move in specific paths called orbitials
Heisenberg Uncertainty Principle
Cant know the exact location and speed at a given moment. can only know one
Mass number
protons and neutrons
Law of conservation of mass
mass cannot be created or destroyed
Law of definite proportion
they’re always going to combine in the same proportion (H20)
Law of multiple proportion
Can combine in multiple proportions (CO and CO2)
Isotope
Same # of protons and different # of nuetrons
What is the atomic mass
a weighted average of all naturally occurring isotope
Who to calculate isotope
% times mass plus % times mass divided by 100
