INT --Atomic Theory Vocabulary

Atomic Theory Vocabulary

   1)    atom

   2)    electron

   3)    electron cloud

   4)    John Dalton

a.     realized that atoms combine in very specific proportions based on mass

   5)    J.J. Thomson

a.     discovered that there were small particles inside the atom (electrons), meaning that atoms can be divided into smaller substances—“plum pudding” model

   6)    Ernest Rutherford

a.     discovered that atoms contain a nucleus with positively charged particles and that electrons must be “floating” around the nucleus

   7)    Niels Bohr

a.    
proposed that electrons moved around the nucleus in energy levels in a specific path and that they can “jump” from one level to another

   8)    proton

   9)    atomic mass unit (AMU)

   10)                      neutron

   11)                      atomic number

   12)                      isotope

   13)                      mass number

   14)                      atomic mass

   15)                      Schrodinger & Heisenberg

a.     modern atomic theory model—proposed the “electron cloud” where electrons are likely to be found

VOCAB QUIZ ON FRIDAY, OCTOBER 16TH!

Bring in flash cards on Quiz day for extra credit!