Chemistry II AP Core Labs

Links:

Purpose:
To estimate Avogadro's number as well as the length of a molecule and the diameter of an atom.

Summary:
Students measure the diameter of an oil slick of oleic acid. By assuming these molecules to be vertically positioned floating cylinders, math generates close estimates.

Objectives Links:
I. A: Atomic theory and atomic structure

Process Skills Checklist

Materials:

• oleic acid solution
• chalk dust or lycopodium powder
• pizza pans
• detergent

Safety Concerns:
General lab safety procedure.

Revision Date:
Summer 2001