ChemCom Core Labs

Links:

Purpose:
To illustrate the force of expanding steam. To measure the percent water in popcorn.

Summary:
Popcorn kernels are weighed before and after popping. Weight changes are used to calculate the percent water in the popcorn. Models are portrayed of the particles in solids, liquids, and gases.

Objectives Links:
1. E: Solids, Liquids, & Gases

Process Skills Checklist

Materials:

• popcorn
• beaker tongs
• small beakers
• centigram balance
• toothpicks
• aluminum foil
• hot plates

Safety Concerns:
Standard operating procedure for using hot plates

Revision Date:
Summer 2001