ASTR 689, Extragalactic Astronomy
Due Monday, December 10, 11:59 pm.
1. Summarize in less than or equal to 2 pages (single spaced) one of the papers you
read as part of the course but that we did not discuss in class. See the syllabus
The Chemistry of Solids
X-ray diffraction (XRD):
Technique for determining arrangement
of atoms or ions in a crystal.
Analyze pattern that results when X-rays
are scattered after bombarding the crystal.
Bragg Equation: n2d
Colligative Properties of Solutions
Solution properties that depend on concentration of
solute particles, not the identity of particles.
change in b.p.
and f.p. of solution
Identify the choice that best completes the statement or answers the question.
1. Coulombs law states that the energy of attraction between ions depends _
a. only on the charge of the cation.
b. only on the charge of the
Chapter 10 Forces Between Ions and Molecules
Interactions between Ions in Salts
This section is largely a review of ionic bonding, but put into a different context:
solubility. Weve already covered this in Section 4.7 when discussing solubility rules