AIM Determine if glow sticks and glow-in-the-dark toys react the same way to heat.

Hypothesis Glow-in-the dark toys act the same way as glow sticks do when they are heated and cooled. Glow-in-the dark toys do not act the same way as glow sticks do when they are heated and cooled. or

Materials 4 glow sticks 4 glow-in-the-dark toys Freezer Refrigerator

Method Activate all the glow sticks Check to see if all the objects glow in the dark Put one glow stick and one toy into each environment (sun, desk, refrigerator, freezer) Check if each one is still glowing every day this week (make sure you let the glow stick in the freezer thaw out first before you check it)

Results Monday Tuesday Wednesday Thursday Friday GS-Sun Toy-Sun GS-Desk Toy-Desk GS-Frig Toy-Frig GS-Freezer Toy-Freezer

Conclusions Did the glow sticks and toys react the same way to heat? Do you think they are made out of the same things? Can you think of any other experiments you would like to do with the toys and glow sticks?