Questions tagged [chemistry]
The science of matter and the changes it can undergo.
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Are water-based electrolyte batteries limited to 1.23 volts per cell at most?
In the popular YouTube channel Veritasium, generally known for rigorous research and not making false claims continuously, there was a video about lithium ion batteries, The Perfect Battery Material ...
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Does Fridge Friend extend the life of produce in your fridge?
Fridge Friend is a vented box of chemicals that, when placed in the fridge, is supposed to filter the moisture in the air, removing ethylene gas, bacteria, impurities and "excess moisture".
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Are any home lead testing kits effective for general use (not just paint)? [closed]
There are many people on TikTok and other social media loudly declaring “there’s lead in product X, it’s unsafe!” using lead testing kits they purchased online. Common subjects of these tests include ...
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How can "chemical-free" surface cleaners work?
There's a company called 2San that has gotten some press recently for selling a "chemical-free" cleaner, which is "created by re-engineering water in a seven-stage filtration process&...
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Does scouring a stainless-steel pan cause it to release metals into food?
The cookbook "Let's Cook It Right", by Adelle Davis contains the following claim (on page 4 of at least one edition - I'm not sure which edition this is but it's likely from the late sixties ...
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Did (someone in) Turkey ship 16 tons of "explosive materials" to Hamas, disguised as gypsum?
FDD:
Israeli customs authorities revealed on September 14 [2023] that their agents intercepted 16 tons of explosive material on its way from Turkey to the Gaza Strip in July. [...]
According to the ...
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In the event of a siren warning the public of a gas leak, is it actually advisable to listen to the radio when smelling gas?
The Finnish website pelastustoimi advises to listen to the radio in the event of smelling gas.
If you are already indoors and smell gas
put a wet cloth in front of your mouth and breathe through it
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Are chemicals used to ripen fruit in developing countries harmful to the health of consumers?
Note: there are some answers to this question on Chemistry.SE, but I prefer a sceptical approach here.
I ask this question in connection with a post on Facebook (in Indonesia), which asked:
Hi ...
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Can using the brushes or combs of people who dye their hair render my hair white? [closed]
My parents always caution me to not use their hair brushes or combs as they apply dyes (to dye their hair black) on a regular basis. According to them, my hair will start whitening. I am very insecure ...
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Is all disease caused by the electron spin of food?
Dr Elizete Kaffer is a Brazilian dermatologist.
In a video (in Portuguese) she claims, starting from 0:54 (enphasis on the part that I translated):
[After talking about hidden sources for pathologies,...
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Is photosynthesis 60% efficient?
In this article it is claimed that photosynthesis efficiency could be up to 60%.
The closest process to artificial photosynthesis humans have today is photovoltaic technology, where a solar cell ...
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Are all Oreo-cookie ingredients listed in accordance with EU ingredient labelling regulations?
I have read in several places about the claim that Oreo cookies may be using titanium dioxide in their preparation. This additive, although widely used, has been recently under the suspicion of ...
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Can the molecular bond angle of water be changed via distillation?
John Ellis claims that water has a "hydrogen bond angle" ranging from 104° to 114°, and that his patented distillation machines can produce water with a permanent hydrogen bond angle above ...
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Is Adrenochrome an addictive drug only obtained by drinking blood?
One of the core beliefs of QAnon is that some people are addicted to adrenochrome that can only be obtained by drinking the blood of frightened victims.
Sean Morgan, author of a QAnon FAQ, talks about ...
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Does only China uniquely possess some 'rare earth elements' that can't be mined elsewhere?
How rare exactly are 'rare earth elements'? I'll use IUPAC's definition.
A rare-earth element (REE) [...] as defined by the International Union of Pure and Applied Chemistry, is one of a set of ...
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