Questions tagged [chemistry]

The science of matter and the changes it can undergo.

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26 votes
1 answer
7k views

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 ...
-4 votes
0 answers
168 views

Earthing - Does this published article change anything about this previous answer? [duplicate]

This previous thread states whether earthing reduce oxidative stress and inflammation. I recently found an article published in Elsevier, named "Integrative and lifestyle medicine strategies ...
21 votes
3 answers
8k views

Man using "water as fuel" for a welding machine? (H₂O → "HHO")?

I saw a while back a YouTube video that appears to show a news report of a man who patented technology to turn water into "HHO". The video makes some big claims — 161 km (100 mi.) on 0.1 L (4 ...
37 votes
2 answers
8k views

Do emotionally-driven tears release toxins from the body?

Sometime ago I'd heard someone trained in child psychology claim that crying for emotional reasons (as opposed to getting something in your eye for example) released toxins from the brain and/or body. ...
9 votes
2 answers
18k views

Do copper jewellery stains indicate illness?

People wearing copper jewellery quite often have black/green/dark blue stains on wrists and fingers. Articles like Copper Jewelry & Green Skin say that these stains are related to a person's ...
15 votes
2 answers
31k views

Is Coca-Cola effective at removing blood-stains?

From My Perfect Automobile: In many states the highway patrol carries two gallons of Coke in the trunk to remove blood from the highway after a car accident. I doubt it's real. Does Coca-Cola work ...
-3 votes
1 answer
530 views

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 ...
13 votes
0 answers
4k views

Will storing plastic water containers on concrete cause contamination?

Several preppers make the claim that storing plastic containers with water on concrete floors is bad because chemicals from the floor can leak into the plastic and then end up in the water. Here are ...
6 votes
2 answers
1k views

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,...
8 votes
1 answer
686 views

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 ...
5 votes
1 answer
925 views

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 ...
25 votes
3 answers
7k views

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 ...
7 votes
0 answers
695 views

Are angel food cakes cooked in tube pans because they need support?

According to Cooks Illustrated: There’s a good reason angel food and chiffon cakes are always baked in tube pans, and it’s not just aesthetics. These specialty vessels actually help delicate cakes ...
46 votes
2 answers
8k views

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 ...
12 votes
2 answers
10k views

Can burning potato peels clean a chimney?

Some state, that burning dry potato skin would remove or reduce carbon black in a chimney. One can find many examples for this online: The potato peels burn at high energy and will help push the ...
4 votes
0 answers
2k views

Is biochemical transmutations of elements possible?

According to a recent press conference Russian scientists have made a breakthrough so astounding it could change the universe as we know it in fundamental ways. The essence of this discovery and ...
-4 votes
1 answer
246 views

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 ...
3 votes
0 answers
130 views

Are all snowflakes unique? [duplicate]

It's often been told to me that all snowflakes are unique. It's led to the phrase "special snowflake" to describe something or someone who is unique/distinct from all others. Even Wikipedia states: ...
1 vote
1 answer
540 views

Are pomegranate seeds edible? [closed]

My dad usually eats cherry seeds, which seemed dangerous to me, so I searched it online and indeed it can be dangerous. Today, I was about to eat a pomegranate but I wasn't sure if the seeds are ...
15 votes
1 answer
2k views

Did silver mostly not tarnish before the Industrial Revolution?

Theodore Gray wrote an article about silver bullets in Popular Science and mentions in it that silver mostly did not tarnish before the Industrial Revolution. But today silver is far more common, ...
3 votes
0 answers
103 views

Does calcification of the pineal gland negatively affect normal bodily functions? [duplicate]

I received this link from an associate of mine. It smells like pseudo-scientific bull to me, but there are a LOT of claims made in the article that I can't really debunk all by myself. To quote from ...
13 votes
2 answers
1k views

Is diet soda as bad for your teeth as regular soda or methamphetamine?

I've heard of many claims about soda water itself containing carbonic acid (as claimed by a teacher I had in high school) and having a generally high pH that's enough to destroy one's teeth. This ...
75 votes
3 answers
18k views

Does microwaving food create particles that are not created when warming food by conventional means?

I was reading "Szlachetne Zdrowie" (No 7/2019) which is a Polish health magazine released by "Nasz Dziennik", which is a Catholic, very conservative newspaper of questionable quality. I read the ...
9 votes
1 answer
1k views

Does this video show a Hong Kong protestor disabling a tear gas cannister with liquid nitrogen?

A recent tweet from @PatriotCoburn says: Holy Shit the protesters in Hong Kong are grabbing the canisters of tear gas dropping it into liquid nitrogen and turning it into its harmless solid form. ...
11 votes
1 answer
678 views

Are a third of the proteins we consume dependent on synthetic fertilizer?

In July 1997, Vaclav Smil wrote an article in Scientific American on humankind's use of the Nitrogen Cycle (emphasis added): Synthetic fertilizers provide about 40 percent of all the nitrogen taken ...
5 votes
1 answer
1k views

Does detergent help clean clothes in washing machines?

The Telegraph reported in 2008 that British historian Ruth Goodman: stopped using soap in her washing machine and says the clothes come out just as clean. "We're all victims of 150 years of hype ...
10 votes
3 answers
9k views

Does elemental mercury give off toxic vapor?

This video claims to show mercury giving off a steady stream of toxic vapor when viewed with a UV light. http://www.youtube.com/watch?v=JABbofwD3MI There is also a Reddit discussion about this video....
5 votes
1 answer
740 views

Do pain killers "target" pain?

Everyday I hear advertisements that some painkiller directly targets the pain. e.g. Nurofen's UK web-site Targets pain fast. [...] Targets pain twice as fast as standard ibuprofen tablets. Is it ...
123 votes
5 answers
24k views

Do atoms exist?

There are plenty of examples of people doubting ([1], [2], [3], [4], [5]) or denying ([6], [7], [8]) the existence of atoms. Is there any compelling evidence for the existence of atoms? Has anyone ...
31 votes
2 answers
93k views

Does baking soda remove odors?

I have always been told that an open box of baking soda will "absorb" odors and make a fridge smell less. I have even seen people with three boxes in one fridge. My question is whether there is any ...
9 votes
2 answers
2k views

Are added nitrates and nitrites in our diet harmful?

It is widely claimed that meat-curing agents containing nitrates or nitrites are dangerous food additives. This site puts them in a top ten list of bad food and recommends avoiding cured meats, ...
6 votes
0 answers
201 views

Does commercially-produced cotton cloth contain unhealthy chemicals that cause fertility problems?

The article Czy Twoje ubrania Cię trują? "Wchłaniamy chemię przez skórę. Stąd np. problemy z płodnością" (Do your clothes poison you? "We absorb chemicals through the skin, hence, for example, ...
31 votes
1 answer
83k views

What happens when you mix Lysol and bleach?

My mother just forwarded an email to all her contacts (thanks, mom), warning us of the dangers of mixing Lysol and bleach together. Here's most the content, translated from French: Bleach and Lysol, ...
1 vote
1 answer
442 views

Is Plant-e an actual company stating a serious premise? [closed]

This is what I read beforehand and then I reached the company page. They state that plants produce energy. This happens when releasing stuff from the photosynthesis process, which is consumed by ...
13 votes
1 answer
943 views

Are silver dental fillings safe?

Are silver tooth fillings safe for a person's health? My dentist says they are safe for my health. My general practitioner has no opinion on the matter. Some countries have banned or restricted ...
19 votes
1 answer
1k views

Is Roundup weed killer carcinogenic?

Monsanto have been found liable for the terminal cancer of a former groundskeeper exposed to glyphosate and other chemicals in their Roundup herbicidal product. On Friday, a California jury hit ...
7 votes
2 answers
695 views

Do certain fruit combinations ripen faster?

It is commonly claimed that certain fruits (e.g. apples, bananas, high-ethylene fruits and their dastardly "ripening hormone") make other fruits ripen faster. These claims appear on mainstream media ...
9 votes
3 answers
11k views

Does skimmed milk have more added chemicals than whole milk?

I've heard that skimmed milk has more added chemicals than whole milk. Is this true?
18 votes
1 answer
7k views

Is tomato juice useful for removing skunk smell?

It's a common belief that you should use tomato juice to remove the smell after you get sprayed by a skunk. Does it work?
30 votes
1 answer
167k views

What is monoatomic gold?

Over the weekend I heard an acquaintance mention something called "monoatomic gold", followed by a bevy of fantastic and surprising claims about the substance, what it does, and how it was discovered. ...
8 votes
0 answers
986 views

Do the water filters in Pure & Clear filters work?

Dr Mercola advertises Pure & Clear Filters: Pure & Clear filters use a “selective filtration” process rather than a mechanical one for a couple of very important reasons. This advanced ...
5 votes
1 answer
521 views

Does fluoridation and chlorination in the US cause thyroid issues?

From an answer in Travel.SE with a net score of 10: Mains water is typically laced with chlorine and fluoride by law, to the point that you step out of the shower smelling [like] you just stepped ...
19 votes
1 answer
40k views

Will fluoride and chlorine dissipate from tap water left to sit overnight?

One common recommendation for watering house plants with tap water is to allow the water to sit overnight before watering, so that the fluorine and chlorine that are commonly added to tap water (which ...
16 votes
1 answer
12k views

Is chlorine in water absorbed quickly through the skin?

I recently saw a demonstration of a water filtration and purification system. In one of the demos two glasses were filled with tap water and then someone put three fingers into one of the glasses and ...
8 votes
2 answers
18k views

Does Pureit Polisher remove the chlorine from chlorinated water?

This purifier claims to produce 100% pure water. They use chlorine. Chlorine, when taken in for a long period, is bad for health. The 4 stage purification process. Polisher Removes chlorine and ...
2 votes
0 answers
1k views

Does chlorine in water harm soil bacteria?

This article claims that both chlorine, and chloramine, which are added to many municipal water supplies to kill harmful bacteria, can also harm the good bacteria in soil, necessary for a healthy ...
114 votes
5 answers
23k views

Are 19.6 pounds of CO2 produced from burning a gallon of gasoline?

According to the U.S. Energy Information Administration, About 19.6 pounds [8.89 kg] of CO2 are produced from burning a gallon of gasoline that does not contain fuel ethanol. About 12.7 pounds [5....
11 votes
2 answers
4k views

Does cow urine contain gold?

I stumbled upon a video of a baba (spiritual guru | Baba Ramdev) saying that cow urine contains gold. This belief is widespread in India. I looked it up and many sites saying cow urine contains gold. ...
22 votes
2 answers
12k views

Is water calcification bad for your health?

I have a friend, who adamantly believes that water calcification causes a number of problems, including poor health. He also said it made the water taste disgusting. He had recently installed a ...
14 votes
2 answers
23k views

Can you die by absorbing cyanide through the skin?

A friend of mine was talking about The Iceman, a killer that supposedly used cyanide absorbed through the skin as his murder weapon: Kuklinski favored the use of cyanide as it was quick kill poison,...