# Unit II Atomic Structure

A Be aware of early atomic models.

B Know the atomic properties and nomenclature.
1 Know the relative size, mass and position of protons, neutrons and electrons in atoms.
2 Know the difference between atomic mass, mass number and atomic number.
3 Be able to determine the number of protons, neutrons and electrons in an identified isotope of an element.
4 Be aware of other subatomic particles.

C Identify and solve problems of basic radioactivity
1 Know the three basic types of radiation.
2 Predict and balance radioactive equations.
3 Be able to do half life calculations.

D Be able to calculate average atomic mass.

Key Terms:
cathode ray tube (CRT), atomic number, nucleon, mass number, radioactivity, alpha radiation, beta radiation, gamma radiation, electromagnetic energy, frequency, hertz, wavelength, quantum theory, quanta, photon, atomic mass, half life.

Important people of history:
Dalton, Rutherford, Thompson, Bohr, Marsden, Geiger, Schrodenger

Suggested Problems: Read Chapter 3 – Sections 1 & 2, Chapter 18
pg 78 (1, 4, 5) pg 89 (1-8) pgs 107-112 (1, 2, 4, 5, 13, 16, 18, 22, 39-46) pg 647 (5&6) pg 657 (5, 6, 9) pg 666 (1-8) pgs 669-674 (18, 19, 26, 30-44, 50, 53, 54, 56-59, 65-69)

# Unit III The quantum mechanical model of the atom and the periodic table

A Be able to describe energy related to the electromagnetic spectrum in terms of color, wavelength and frequency.
1 Know how the color of light is related to frequency and energy.
2 Be able to calculate the energy of light.

B Know the major characteristics of the quantum mechanical model of the atom.
1 Be aware of the historical development of the atom.
2 Describe the wave-mechanical view of the atom.
3 Describe the position and characteristics of protons, neutrons and electrons.
4 Use quantum numbers and electron placement rules to describe the location of electrons.  (write electron configurations)
5 Write electron dot diagrams.

C Understand and use the mole and Avogadro’s number.
1 Be able to calculate the number of atoms given moles or mass of an element.
2 Be able to calculate the mass of an element given the number of atoms or moles.

D Know the Periodic Table.
1 Know the development of the periodic table and it’s importance.
2 Use the periodic table to predict electron configurations.
3 Identify selected groups of elements on the periodic table.
4 Predict properties of the elements based on periodic trends of atomic size, electron affinity, electronegativity and ionization energy.

Terms:
Wave -particle duality, momentum, quantum, quantum number, electron cloud, principal quantum number, sublevel, orbital, periodic law, transition element, period, group, family, metal, nonmetal, metalloid, alkali metal, alkaline earth metal, chalcogens, halogens, noble gas, ionization energy, shielding effect, electron affinity, electronegativity.

Suggested Problems: Read Chapter 3 (sections 3 & 4) and Chapter 4 (Sections 1-3)
pg 99 (1-11) pg 104 (4-11) pgs 107-112 (10, 23-27, 29-34, 44, 47-59, 61, 63, 64, 65, 68-73, 76-82, 90-92, 95-98, 101) pg 122 (3-10)  pg 131 (1-6) pg 141 (1-5, 9-11) pgs 150-154 (19-22, 29-32, 60, 71)