Kinetic-Molecular Theory, "Bouncing Ball" Distillation

4D30.24C | Be2
Catalog: 
4D30.24C
Location: 
Be2
Room: 
PS F175
Condition: 
Very Good
Quantity: 
1
Setup Time: 
5 minutes
0
Date Added: 
Wednesday, February 23, 2011 - 12:00am
Description: 

A clear plastic container with 14 rubber balls, representing molecules.

Instructions: 

Explain to students that the colored rubber balls represent molecules. Without moving the tub, the molecules remain locked into fixed positions, a "solid state". Now shake the tub side to side. The molecules (balls)begin to move about. The more you shake, add energy, the more they move about, this represents a "liquid state". Finally add more energy to the system, shaking more vigorously, and some of the balls leave the container, some of the molecules enter the "vapor state".

Purpose: 
To demonstrate the concepts of kinetic-molecular theory, freezing, meilting, and evaporation
Parts: 

Clear tub of colored rubber balls

Vendor: 
Flinn Scientific Inc.
Complete: 
No