It is fairly easy to show the activity of yeast in a sugar water solution.
Add bleach, and the bubbles stop.
I suspect bubbling chlorine gas through it would have the same effect, but that is not something I would try with twelve-year-olds.
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On Sun, Aug 13, 2023 at 5:14 PM Markos <markos@c2o.pro.br> wrote:
Hello,
I'm organizing a citizen science course with diy activities about water
for young people aged between 12 and 16 years old.
I want to include an activity to demonstrate the disinfectant action of
chlorine, and I need to find an activity that uses affordable materials
and culture media and a protocol that is easy for participants to
replicate with kitchen utensils.
But as a Chemist I ask a help to suggest examples on web so I can save
time searching on Google.
Thanks,
Markos
www.c2o.pro.br
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