Chapter Summary

SAT Subject Test Chemistry

PART 2 REVIEW OF MAJOR TOPICS

CHAPTER 2 Atomic Structure and the Periodic Table of the Elements

The following terms summarize all the concepts and ideas that were introduced in this chapter. You should be able to explain their meaning and how you would use them in chemistry. They appear in boldface type in this chapter to draw your attention to them. The boldface type also makes it easier for you to look them up if you need to. You could also use the search or “Google” action on your computer to get a quick and expanded explanation of these terms, laws, and formulas.

alpha particle	half-life	oxidation number
atomic mass	Hund”s Rule	Pauli Exclusion Principle
atomic number	inert atoms	periodic law
atomic radii	ionic radii	period or row
Aufbau Principle	ionization energy	phosphorescence
beta particle	isotopes	quantum numbers
Bohr model	Lewis structure	quantum theory
covalent radius	Mendeleev	radon
Dalton”s atomic theory	metalloids	s, p, d, f orbitals
electron	Moseley	transmutation
electronegativity	neutron	transition elements
gamma ray	nuclear fission	uncertainty principle
Geiger counter	nuclear fusion	valence electrons
group or family	nucleus	wave-mechanical model

Internet Resources

Online content that reinforces the major concepts discussed in this chapter can be found at the following Internet addresses if they are still available. Some may have been changed or deleted.

Emission Spectroscopy

http://phys.educ.ksu.edu/vqm/html/emission.html

This site offers interactive computer visualizations of the quantum effects of emission spectra for a variety of substances.

Interactive Periodic Table

http://www.webelements.com

This is an interactive online periodic table available on the Web.

www.ptable.com/

This site shows properties, orbitals, and isotopes in chart form.

Radioactive Dating

http://chemistry.about.com/od/workedchemistryproblems/a/c14dating.htm

This Web page offers a tutorial on radioactive dating using carbon-14.