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Honors Chemistry
UNIT 3
All about the ATOM
(Chapter 3 and Chapter 24: pg 684-699)
How did early atomic theory evolve over time?
How can an atom be changed and what are the results because of the change?
How are math concepts used in chemistry?
1) Know:
Definitions:
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Aristotle
Democritus
Daltons Atomic Theory
Thomson’s Atomic Theory
o Cathode Ray Tube
o Plum Pudding Model
Millikan
Rutherford
o Gold Foil Experiment
Bohr
o Solar system model
o Orbits
Atomic Weight
Isotope
Atomic Number
Ion
Atom
o Protons
o Electrons
o Neutrons
Law of Conservation of Mass
Nuclear Reactions
o Alpha particle
o Beta particle
o Gamma rays
o Positron
o Nuclear Fission
o Nuclear Fussion
o Half-life
Moles
Avogadro’s Number
Molar mass
Particles
Average atomic mass
Understand:
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What makes isotopes of the same element different
The different types of radiation
What average atomic mass represents
How an atom becomes an ion.
Nuclear reactions change an element.
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Be able to:
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Compare the models of the atom
Describe Dalton and Thompson’s early models of the atom and why parts of them are currently untrue.
Explain Rutherford’s experiment and the significance of his observations.
Explain the difference between an ion and an atom.
Explain the difference between an isotope and atom
Calculate the number of protons, electrons, and neutrons in an atom or ion given other appropriate
information.
Describe the structure of the atom.
Write simple nuclear reactions and apply the law of conservation of mass
Calculate half-life.
Calculate mass remaining of an element after half-lifes have occurred.
Use dimensional analysis to solve problems involving the relationships between grams, moles,
particles, and liters.