CHEM 120: Introduction to Inorganic Chemistry

Chapters Covered and Test dates

Chapter 2: The composition and structure of the atom

Matter and structure

Composition of the atom

Makeup of an atom for a chemist

"Name"

Elemental Symbols

Symbolic notation for element

"If the"

Isotopes (or are all atoms of a given element the same?)

"33"

"What is the atomic number..."

"How many protons,"

Average atomic mass

Isotopic mass problem

Question 2.3

Harder isotope problem

Ions

"Charge on an ion =..."

"2.24:"

"2.28 from end of..."

Development of the atomic theory

Dalton’s Atomic Theory (1808)

Dalton’s hypotheses

Slide 26

Which of Dalton’s postulates are considered true today?

Subatomic particles

Electrons

Slide 30

"Find rays have same properties..."

Are there other particles that make up the atom?

"Protons,"

Slide 34

Natural radioactivity

Slide 36

Rutherford picture of atom from scattering expt (1910)

2.4: Relationship between light and atomic structure

Light and atomic structure

Slide 40

"Pass ordinary light through a..."

Slide 42

Bohr atom

"Electron can only be located..."

Slide 45

Summary of results of Bohr’s theory (p 47)

"Electrons can be found only..."

Modern atomic theory

"Heisenberg Uncertainty Principle:"

"This leads to:"