Chapter 2 Lecture Outline
Imaging and Moving Individual Atoms
Modern Atomic Theory and the Laws That Led to It
- Democritus
- John Dalton; Atoms, Elements, and Compounds
- Lavoisier, Law of Conservation of Matter
- Proust, Law of Constant Composition or Law of Definit Proportions
- Atomic Model (Video)
- Electricity (Video)
- Radioactivity (Video)
- Protons
- Neutrons (Chadwick)
- Rutherford, the Nucleus of the Atom (Video)
The Discovery of the Electron.
- JJ Thompson - Cathode Ray Tube (Video)
- Millikan - Oil Drop Experiment (Video)
The Structure of the Atom.
Subatomic Particles: Protons, Neutrons and Electrons in Atoms.
Subatomic Particles
Particle |
Charge |
Mass |
Symbol |
Significance |
Proton |
+1 |
1 u |
1p1 |
Atomic Number |
Neutron |
0 |
1 u |
1n0 |
# neutron + # proton = isotope mass |
Electron |
-1 |
0 u (0.0005485799 u) |
0e-1 |
charge of atom |
Finding Patterns: The Periodic Law and the Periodic Table.
- Example of Periodic Trends, Alkali Metals reacting with water (The Chemistry Set CD-ROM)
- Lithium in Water video clip
- Sodium in Water video clip
- Potassium in Water video clip
- Rubidium in Water video clip
- Cesium in Water video clip
- Basic Outline
- Groups
- Periods
- Arrangement of Elements
- Reactivity
- Names of Regions
- Metals and Non-Metals
- Alkali Metals
- Alkaline Earth Metals
- Halogens
- Nobel Gas
- Main Group
- Transition Metals
- Inner Transition Metals
- Diatomic
- Metals/Non-Metals
- Properties of Groups and Periods
- Reactivity
- Physical Properties
- Oxide Formulas
- Hydrogen Formulas
- Electronic Basis for Similarity
Atomic Mass: The Average Mass of an Element's Atoms.
- Video
- Mass Spectrometry (overhead)
- High Resolution Mass Spectrometer
- Number of protons, neutrons, and electrons in examples
-
Molar Mass: Counting Atoms by Weighing Them.
- The mole as a counting unit
- Definition of the mole
- 1 C-12 atom mass 12 u (unified atomic mass units)
- 1 mole C-12 mass 12 g
- 1 mole = 6.022136736 x 1023 items
- u atom-1 = g mole-1
- Avogadro's Number
- mole, mass, and quantity conversions
- Lecture Problems
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Last Updated Friday, May 25, 2001 1:59:43 PM