#236
When a retired chemist wrote in… we had to explore to his great questions. How does reverse osmosis actually work? Should you put aluminum foil in your dishwasher? Why do mixed powders mysteriously un-mix themselves? This episode is full of clever questions, surprising chemistry, and very strong contributions from listener Vince!
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Timestamps
0:00 – Intro + listener Vince brings the chemistry
1:30 – Reverse osmosis: what it is and why it works
2:00 – Osmosis explained simply
3:35 – Reverse osmosis vs normal filtration
4:20 – What reverse osmosis removes (PFAS, salt, contaminants)
5:00 – Why “pure” water can create new problems
6:10 – Why some companies re-mineralize water
8:10 – Water kiosks, PFAS, and an unexpected lead problem
10:40 – Why reverse osmosis creates so much wastewater
11:40 – Should you put aluminum foil in your dishwasher?
13:00 – Why dishwashers are secretly chemical reactors
16:00 – Melissa’s theories on what the foil might be doing
17:00 – Aluminum, silver tarnish, and stainless steel
21:10 – Sacrificial metals: aluminum protecting steel
24:20 – Dishwasher complaints + real life testing plans
26:20 – Why powders and solids can “un-mix” themselves
27:45 – The Brazil Nut Effect explained
29:20 – Why mixed particle sizes matter
30:40 – Instant coffee jars, Raisin Bran, and product design
31:30 – Mark Rober, floating in sand, and weird physics/chemistry crossover
33:40 – Bird tangent: woodcocks stomping for worms
35:15 – Wrap-up + thanks to Vince and the Chemmunity
Check out our website at chemforyourlife.com
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References from the Episode:
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