Question about Explore Glow-in-the-Dark Water! activity

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AbigailR
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Joined: Sat Mar 25, 2023 3:55 pm
Occupation: Student
Project Question: I've signed up for a middle school science competition. I need to make a data-driven project and make the data to study. I wanted my topic to be something related to buyable jellyfish. I want this because I love jellyfish, but I'm not sure if this idea would make a winning project, which is what I need. Animal testing isn't allowed. Should keep this topic or not? Any science ideas not jelly related? If you know stuff about jellies or animals, can you help me brainstorm some good topics?
Project Due Date: in 2-3 months
Project Status: I am just starting

Question about Explore Glow-in-the-Dark Water! activity

Post by AbigailR »

Hey! I was wondering, does the amount of bleach I add affect this project. Like, if I add less bleach would it not stop the glow completely? Thanks. :D :D :D :D :D
The activity can be viewed at: Explore Glow-in-the-Dark Water!
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audreyln
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Joined: Fri Oct 01, 2010 7:28 am
Occupation: Engineer - Chemical
Project Question: n/a
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Project Status: Not applicable

Re: Question about Explore Glow-in-the-Dark Water! activity

Post by audreyln »

Hello,

You are correct, adding less bleach will mean less of the quinine is oxidized and unable to emit blue light. The activity calls for putting two drops of bleach in about one cup of tonic water. You could try only one drop and see if the mixture still glows. Or to get an even lower concertation, increase the amount of tonic water to two cups and use only one drop and see if the mixture still glows.

Good luck!

Audrey
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