AP Chemistry
Chapter 7 Review
NAME:
1. Chapter 7 AP Multiple-Choice Review Questions: ALL  (these are the ones at the end of the chapter
on the page that doesn’t have a number)
2. The blue color in fireworks is often achieved by heating copper (I) chloride to about 1200˚C. Then the
compound emits a blue light having a wavelength of 450 nm. What is the increment of energy (the
quantum) that is emitted at 4.50 x 102 nm by CuCl?
3. A hydrogen atom with an electron in the first shell (n=1) absorbs ultraviolet light with a wavelength of
1.03 x 10-7 m. To what shell does the electron jump?
4. The laser light used in compact disk players has a wavelength equal to 780 nm. In what region of the
electromagnetic spectrum does this light appear? What is the energy of this light in kilojoules per mole?
5. Consider the noble gas xenon:
a. Write the electron configuration of xenon using the abbreviation of the previous noble gas.
b. When xenon absorbs 801 kJ/mol of energy, it is excited into a higher-energy state in which the
outermost electron has been promoted to the next available subshell. Write the electron
configuration for this excited xenon.
c. The energy required to completely remove the outermost electron from the excited xenon atom is
almost identical to the energy required to remove the outermost electron of cesium. Explain.
6. Write balanced equations for the reaction of lithium with the following substances. If no reaction
occurs, write N.R. Your bookwork work and section 7.13 can help you with this problem.
a. H2O
b. S
c. Br2
d. N2
e. O2
7. Know the periodic trends we discussed in class and the reason for the trend. Remember you want to go
to a deeper level with this! (atomic radii, ionic radii, ionization energy, electron affinity,
electronegativity)
8. Where do the shapes of the atomic orbitals come from? Is there really something in the atom that looks
like a sphere or a dumb bell?
9. What does it mean when an electron is said to be highly shielded?
10. How does the demo we did in class with the phosphorescent vinyl relate to the photoelectric effect?
11. Table 7.5 on page 330 of your textbook has a table of ionization energies. Explain the big jumps in
energy.
12. What is Coulombic attraction? What are the two variables and which one will have a bigger impact on
attraction?
13. Write a chemical equation illustrating ionization energy for bromine.
a. Would bromine or germanium have a higher ionization energy. Explain your answer.
b. Be able to answer questions like 9b for all the trends in periodic properties that we have
discussed and are given in question 7.