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Periodic Table Construction
Description:
Given the facts:
1) Elements may be arranged by families: halogens, noble gases, and alkali
metals.
2) Elements may be arranged by relative weights.
Show that the periodic table results.
Periodic Law: When the elements are arranged by atomic number, their physical and
chemical properties such as atomic radius, ionization energy and electron affinity, vary
periodically.
Materials:
 3.5 X 4.5 inch cards each showing element symbol, atomic number, and atomic
weight.
 White Plasti-Tak (IU Bookstore)
Procedure:
Use plasti-tak to stick card on blackboard.
Have students help try various arrangements of the elements until the periodic
table arrangement is found.
Notes:
This demo. was developed for Prof. Ewing's C100 course.
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