SAT Subject Test Chemistry

PART 2

REVIEW OF MAJOR TOPICS

CHAPTER 2

Atomic Structure and the Periodic Table of the Elements

Chapter Summary

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.