history of the atom lecture prep objectives
TRANSCRIPT
HISTORY OF THE ATOM LECTURE PREP
Objectives: Demonstrate development of the atomic model. •Differentiate among subatomic particles (protons, neutrons, and•electrons).Determine the number of subatomic particles within an atom.•
Reading: Sections 1 and 2 of the Atomic Structure Chapter Answer Review Questions: Section 1 - #3, 4, and 6 Section 2 - #2, 5, and 7
John Dalton's Atomic Theory
- All elements are composed of ________________ - Atoms are indivisible (_____________________________) - Atoms of the same element have __________________________ - Atoms of different elements have ___________________________ - Compounds contain atoms of __________________________ element - In a particular compound, atoms of different elements always combine _________________________________
Early History of Chemistry
J.J. Thomson's Plum Pudding Model
Ernest Rutherford's Nuclear Model
Results: Conclusions:
John Dalton's Billiard Ball Model
Niels Bohr's Onion Model
Erwin Schrodinger's Electron Cloud Model
Atomic/Isotopic Particles Isotopes are atoms of the same element with different _______________. The atoms must have the same number of ______________, with different numbers of ________________.
mass # (A)
Special Case Isotopes
protium•
deuterium•
tritium•
Homework Isotopes Worksheet - due
Elements to Memorize Li
Na
K
Rb
Cs
Fr
Be
Mg
Ca
Sr
Ba
Ra
Cr
Mn
Fe
Co
Ni
Cu
Zn
Al
Ga
In
Sn
Pb
Ag
Cd
Au
Hg
H
B
C
N
O
F
P
S
Cl
Br
I
He
Ne
Ar
Kr
Xe
Rn