-> How does light play a role in the formation of Ozone?
In this activity, you will .
1. Turn off the classroom lights. Place
the beaker containing the purple solution on the overhead projector and turn
on the projector light. The solution will turn clear. When the
projector light is turned off, the solution will go back to purple.
Half and Half
1. Perform this section of the demonstration with the lights off. Cover
half the overhead projector with foil, several layers thick, and position the
beaker containing the solution so that half is on the foil and half is on the
2. Turn on the overhead light and the half that is exposed to the overhead
light will turn colorless. The half that is over the foil will remain purple.
3. Have the students standing where they can observe the vertical line
of the different colors. This will demonstrate that light caused the reaction,
4. Have the students predict what will happen if the beaker is gently shaken