Purpose: The purpose of this lab is to create slime that can glow, to make observations in order to conclude if the slime is fluorescent or phosphorescent, and to connect this phenomenon to what is happening inside the atom in order for the slime to glow.
Materials: polyvinyl alcohol borax solution zinc sulfide
10 mL graduated cylinder 100 mL graduated cylinder Ziploc baggie
Procedure:
1. Obtain and wear safety goggles. Do not remove them until everyone has made their slime.
2. Measure 50 mL of polyvinyl alcohol and pour it into your bag.
3. Obtain a small amount of zinc sulfide from your teacher.
4. Close the bag and mix contents thoroughly (squoosh it together!!)
5. Measure 5 mL of borax solution. Open your bag and pour the borax solution in.
6. Remove your slime after a few minutes (it should be solidified) and knead it into a ball.
7. Take your slime over to the black light and allow it to sit in the light for a couple of minutes. 8. Record observations in the data table.
9. Then, take the slime away from the black light. Record observations in the data table.
Data:
Observations
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Post-Lab Questions:
1. Is your slime fluorescent OR phosphorescent? ______________________________
2. How do you know? Support your answer with observations. ____________________
3. Describe what is happening inside the atom to cause your slime to glow. Include vocabulary in your explanation!
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