Chemistry (Bolton)

Week 8

Monday 23 October

• P1 wash desks
• grade MC part of test
• hand back papers
• C4-1 pp. 91-93
• Wave Description of Light
• electromagnetic radiation (EMR)
• p. 92
• c = ln
• c = speed of light = 3.00 x 10⁸ m/s
• l = wavelength
• n = frequency
• Silly Putty Lab
• homework
• read pp. 91-93

Tuesday 24 October

• P2 wash desks
• Show tests scores (hand back papers)
• Classical Theory of Atom
• nucleus
• has most of the mass
• protons and neutrons
• electrons
• "orbit” nucleus
• problems:
• ultraviolet catastrophe
• p. 93, p. 94
• Planck
• energy comes in little packets called quanta
• singular is quantum
• frequency determines energy
• E = hn
• E = energy
• h = Planck's constant
• 6.626 x 10^-34 Js
• each frequency has a minimum amount of E needed to exist
• determined by h
• photoelectric effect
• pp. 93-94
• Einstein
• light comes in little packets called photons
• frequency determines E
• high n gives high E
• low n gives low E
• atomic emission-line spectra
• pp.94-95
• Bohr
• e^- exist in exact orbitals
• e^- cannot exist between orbitals
• atoms should not exist (should collapse)
• pp. 96-97
• e^- in an orbital does not move
• hence, gives off no EMR
• quantum mechanics
• Atomic Bingo
• homework
• Tuesday 31 October Chapter Four Test
• read pp. 93-97

Wednesday 25 October

• review
• Quantum Mechanics Theory of Atom
• electrons as waves, p. 98
• Heisenberg Uncertainty Principle, p. 99
• Schrödinger Wave Equation, pp. 99-100
• Quantum Numbers, pp. 101-104
• Principal (Quantum Number)
• n
• E level occupied by an e^-
• indicates main energy level of an orbital
• positive integers: 1, 2, 3, 4, 5, 6, 7, etc
• Angular Momentum (Quantum Number)
• l
• E sublevel occupied by an e^-
• indicates shape of an orbital
• s, p, d, f
• Magnetic (Quantum Number)
• m
• orbital occupied by an e^-
• indicates orientation of an orbital around the nucleus
• Spin (Quantum Number)
• s
• spin of an e^-
• +½ and -½
• Atomic Bingo
• homework
• read pp. 98-100, 101-104

Thursday 26 October

• review
• C4-3 pp. 105-107
• Electron Configurations
• Aufbau principle
• Pauli exclusion principle
• Hund's rule
• orbital notation
• highest occupied level
• outermost level
• valence electrons
• inner-shell electrons
• noble-gas configuration
• C4-3 pp. 110-116
• electron configurations of the elements
• use noble gas notation
• first ten elements
• Atomic Bingo
• homework
• read pp. 105-107, 110-116

Friday 27 October

• review electron configuration & noble gas notation
• Line-Emission Spectrum Demo
• Hydrogen - red
• get data
• calculations (5 decimal places)