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Chapter 4:
The Structure of the Atom
4.1 Early Theories of MatterPhilosophers - Greek ( fire, earth, air, water, Aristotle, Democritus - atom ) 19th Century - John Dalton ( atom ), Alchemy
4.2 Subatomic Particles and the Nuclear AtomElectron, proton, neutron, cathode ray tube, Millikan, J.J. Thompson, Rutherford ( alpha particle, gold foil ) nucleus, Chadwick ( neutron )
4.3 How Atoms Differ
Atomic number, Moseley atomic number = # protons = # electrons isotopes and mass number, atomic mass unit ( AMU )
4.4 Unstable Nuclei and Radioacive Decay
Radioactivity, nuclear reactions, radiation
Types of radiation, alpha a ( 2+ ), gamma ? ( no charge ), beta ß ( 1- )
Section 4.1 Early Theories of Matter
- 10/21/2019 Atomic Structure worksheet
- 11/18/2019 p. 112-114 - 29,30,60a,61,62,64 - 66,71,72(1st line only),75,77
p. 115 - 1-4, 7-10 (5 pts) (17 questions)
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Section 4.2 Subatomic Particles of Matter
- 10/22/2019 Use PhET animation to show complete symbols for elements Be, Li, O, N, K, & F. Show atomic #, mass #, charge (if not zero). Use today's simulation used in class on Chromebooks.
- 10/25/2019 EX CR - Dalton's Playhouse - video shows how to do it. Up to 16 points ex cr
- 10/23/2019 video notes on Structure of the Atom & its history, - Discovering
the Electron, The Nuclear Atom - 1.5 - 2 pages
- 11/18/2019 p. 112-114 - 29,30,60a,61,62,64 - 66,71,72(1st line only),75,77
p. 115 - 1-4, 7-10 (5 pts) (17 questions)
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Section 4.3 How Atoms Differ
- 10/25/2019 EX CR - Dalton's Playhouse - video shows how to do it. Up to 16 points ex cr
- 10/28/2019 Page 113 #72 (draw the chart completely & fill it in.
- 10/29/2019 MOGIL - Isotopes, pages 1 & 2. This link will take you to all of the pages of the POGIL we started today. We will do more of this POGIL tomorrow.
- 11/18/2019 p. 112-114 - 29,30,60a,61,62,64 - 66,71,72(1st line only),75,77
p. 115 - 1-4, 7-10 (5 pts) (17 questions)
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Section 4.4 Unstable Nuclei and Radioactive Decay
- 10/31/2019 Practice Problems for Radioactive Decay 19-26 (all letters)
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Section 4.1 Early Theories of Matter
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Section 4.2 Subatomic Particles of Matter
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Section 4.3 How Atoms Differ
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Section 4.4 Unstable Nuclei and Radioactive Decay
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Section 4.1 Early Theories of Matter
Standard 1 H - Atomic and Molecular Structure
View Standard 1 State Standard: The experimental basis for Thomson's discovery of the electron, Rutherford's nuclear atom, Millikan's oil drop experiment, and Einstein's explanation of the photoelectric effect.
Students Will be able to:Examine the historical experimental basis of the atomic theory. Book Reference Pages: 87-91
Standard 12 k - Investigation and Experimentation
View Standard 12 State Standard: Recognize the cumulative nature of scientific evidence.
Students Will be able to:Book Reference Pages: 87-91
Standard 12 n - Investigation and Experimentation
View Standard 12 State Standard: Know that when an observation does not agree with an accepted scientific theory, sometimes the observation is mistaken or fraudulent (e.g., Piltdown Man fossil or unidentified flying objects), and sometimes the theory is wrong (Ptolmaic model of movement of the sun, moon, and planets).
Students Will be able to:Book Reference Pages: 89-90
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Section 4.2 Subatomic Particles of Matter
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Section 4.3 How Atoms Differ
Standard 1 a - Atomic and Molecular Structure
View Standard 1 State Standard: Students will know how to relate the position of an element in the periodic table to its atomic number and atomic mass.
Students Will be able to:Explain organization of the elements in periodic table according to their mass & chemical & physical properties as proposed by Mendelev & later modified by Moseley. I&E (12D): Formulate explanations using logic and evidence. Book Reference Pages: 98, 99, 101-104
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Section 4.4 Unstable Nuclei and Radioactive Decay
Standard 11 c - Nuclear Processes
View Standard 11 State Standard: Many naturally occurring isotopes of elements are radioactive, as are isotopes formed in nuclear reactions.
Students Will be able to:Define radioactivity and radioactive isotopes. Book Reference Pages: 105-107
Standard 11 d - Nuclear Processes
View Standard 11 State Standard: The three most common forms of radioactive decay (alpha, beta, gamma) and how the nucleus changes in each type of decay.
Students Will be able to:Define and classify each type of radioactive decay. Book Reference Pages: 106, 107
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- RadioActive Decay -Wksht/Tutorial: Radioactive Decay - Wksht/Tutorial Std 11 c,d,e
- Atomic Structure - Worksheet: Atomic Structure worksheet showing atomic symbols, and the mass#, atomic#, and charge as an ion
- Practice Problems for Radio Active Decay - Zum: Practice Probs for Radioactive Decay, balancing nuclear equations and completing alpha, beta, gama decay
- Structure of the Atom worksheet - Notes: These note will assist you in completing your Structure of the Atom worksheet
Atomic Theories
● Dalton's Atomic Theory Visit Site
● Great animations of Cathode Ray Tube (used by JJ Thompson to discover electrons) and Alpha, Beta, Gamma radiations through electric fields (McGraw-Hill) Visit Site
● Audio recording of JJ Thompson discussing his discovery of the electron Visit Site
● Rutherford nuclear atom applet and plumb pudding models, interactive. Shows particles being deflected and bouncing back, & that they never actually touch (PhET) Visit Site
● Animations available from WW Norton Visit Site
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General
● Structure of the Atom - very comprehensive, covers almost entire chapter - Webelements Visit Site
● Bill Nye - Structure of the Atom 2/2 Visit Site
● Bill Nye - Structure of the Atom 1/2 Visit Site
● PhET - Build an atom - very elegant, deals with ions, isotopes, and shows Bohr and Schroedenger/DeBroglie atom models. Visit Site
● PhET - Build an Atom - Suitable for WIN XP Visit Site
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Half-life
● Radioactive Decay and Half-life (Learning On-Line Network) Visit Site
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Racioactive Decay
● 3 types of Radioactive Decay Visit Site
● Radioactive Decay – discussion & tutorial on radioactivity – ( Boston U.) Visit Site
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Shielding & Penetration
● Shielding from radioactivity, uses Geiger Counter and tests kleenex tissue, Al and Pb to demo penetration of radiation from 3 radioactive elements: Pu-239 (alpha), Sr-90 (beta), and Ra-262 (gamma) . Visit Site
● Simple vid (30 sec) showing absorption of alpha, beta, & gamma radiation by paper, aluminum, & lead Visit Site
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Songs - Vids
● Discovery of the nucleus, Neutron, and splitting of the atom - video Visit Site
● Discovery of the electron - video Visit Site
● Atom song (who, what, when) - wmv file Visit Site
● Atom Song - all elements, Tom Lehrer original, cartoons added for interest, and pics of samples of each element. Visit Site
● Atom Song - all elements, Tom Lehrer - shows symbols going to the chart as he sings. Visit Site
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