Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [chemistry]

The science of matter and the changes it can undergo.

5
votes
1answer
758 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 ...
6
votes
0answers
188 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, ...
2
votes
1answer
407 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 ...
7
votes
2answers
592 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 ...
16
votes
1answer
949 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
0answers
469 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 ...
111
votes
5answers
21k 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....
3
votes
0answers
189 views

Is there any scientific basis to this “catalytic converter” to treat hard water?

I came across this product called Softer Water Conditioners. It includes a lot of scientific sounding mumbo-jumbo to explain how it works, which raises my skepticism. Is there any scientific basis to ...
3
votes
0answers
478 views

Does Tesla's 70 kWh battery have 63 kg of lithium and if so, why? [closed]

I have found information that Tesla's 70 kWh battery pack has 63 kg of lithium: https://electrek.co/2016/11/01/breakdown-raw-materials-tesla-batteries-possible-bottleneck/ Considering there's only 13 ...
3
votes
0answers
216 views

Are the chemical compounds BPA, BPS and BPF harmful to humans?

According to the following article by Time, and the study that it cites, several compounds of the chemical bisphenol - used in commonly-handled products like shopping receipts and plastic containers ...
3
votes
0answers
465 views

Will plant-life on Earth end due to too little CO2?

According to a 2013 Daily Mail article : greater evaporation and chemical reactions with rainwater will take away more and more carbon dioxide. In less than a billion years, its levels will ...
7
votes
1answer
509 views

Do transparent beer bottles allow UV rays oxidise the beer faster?

According to the following Facebook post from a Beer fan page: The ultimate goal of adding a lemon to a beer is to hide beer flaws and defects. By using a transparent bottle, ultraviolet (UV) ...
3
votes
2answers
826 views

Do the vitamins in a smoothie degrade when put in the fridge?

I was discussing with a friend about my smoothies consumption and he argued that putting them in the fridge to consume them the next day was not good as the vitamin level/effect drops quickly. ...
3
votes
0answers
502 views

Is vinegar dangerous for dishwashers?

This post claims that putting vinegar in rinse aid reservoir of a dishwasher leads to damage (similar claims can be found here and here): on newer dishwashers, the rinse aid compartments have ...
5
votes
1answer
500 views

Does consuming foods rich in phytic acid prevent mineral absorption?

I've seen a lot of articles warning that consuming phytic acid can prevent the body from absorbing minerals. They recommend soaking beans, chickpeas, lentils and other phytic acid foods before cooking ...
3
votes
1answer
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 ...
16
votes
2answers
2k views

Are towers being built in China that can turn smog into diamonds?

This article about a new project that builds towers that can turn smog into diamonds makes some pretty incredible claims. It claims that: Towers intended to turn carbon in the air into diamonds have ...
11
votes
2answers
3k 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. ...
8
votes
2answers
4k views

Do Duracell batteries last longer than normal batteries?

The claim is Up to 10 times longer lasting power (*) vs. ordinary zinc carbon batteries in high powered toys and flash cameras (picture from Amazon) Do Duracell batteries last longer than ...
5
votes
1answer
494 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 ...
26
votes
2answers
6k views

Are recent claims from India of a car fueled by water and calcium carbide legitimate?

Recently, I came across a video and a news report where it has been reported that a man from India has invented a car which uses water as a key fuel component. The car runs on acetylene gas produced ...
2
votes
0answers
222 views

Does copper react differently with different people? [closed]

One of my friends and I have developed a habit of drinking water from only copper vessels as I have read several benefits of drinking from that. But I observed one strange phenomenon during past few ...
3
votes
0answers
135 views

Is soap foam better for cleaning than soapy water? [closed]

Most people who wash something using soap (e.g. the dishes), seem to believe that the bubbles contribute a great deal in the actual cleaning. This is not something I explicitly saw written down ...
6
votes
1answer
821 views

Should I refrain from putting my clothes to dry outside on a full moon?

This website (French) explains: N'étendez jamais votre linge de couleur un soir de pleine lune. En effet, ces nuits sont plus froides que les autres et font poindre une rosée contenant du peroxyde ...
6
votes
0answers
1k 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 ...
22
votes
1answer
3k views

Would drinking a glass of glyphosate be harmful

In an interview Dr. Patrick Moore claimed that: You can drink a whole quart of it and it won’t hurt you. He then declined the offer to drink a glass of the herbicide to prove his claim, saying: ...
1
vote
0answers
91 views

Chemtrails : A dangerous govt. plot or just another debunked theory? [duplicate]

According to countless chemtrail research theories , trails left in the sky by high-flying govt. aircraft are dangerous chemical or biological agents deliberately sprayed for reasons undisclosed to ...
6
votes
0answers
330 views

Is water with extra oxygen tastier, healthier, or otherwise desirable for humans?

In Japan, it is apparently common to add oxygen to bottled water. But this isn't standard H20. It's a new mix containing 12 to 15 times as much oxygen as regular water. (...) "It's totally ...
4
votes
1answer
1k views

Does freshly-boiled water contain more oxygen?

I was (probably foolishly) reading the side of a box of herbal tea-bags, and noticed that they recommended always using freshly boiled water, because "Freshly boiled water contains more oxygen." As I ...
3
votes
1answer
438 views

Does the hops in beer cause sleepiness?

Does the hops in beer have (a consistent and noticeable) effect on drowsiness? Whenever I drink a beer, I get so sleepy that I can barely keep my eyes open. Is it the hops? It can't be the just ...
11
votes
1answer
804 views

Do extreme homeopathic dilutions still retain quantities of the starting materials?

This Indian Institute of Technology Bombay press release quotes some research papers which claims to prove that homeopathic remedies do retain original substances even when diluted. The paper ...
23
votes
1answer
3k views

Does copy paper become “old and yellow”?

I have a part-time job at a place where printing, copying, scanning, faxing, and shredding happens every day. Thus, we have about two large cabinets with about 56 reams of paper (packs of 500 sheets) ...
7
votes
0answers
404 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 ...
23
votes
3answers
8k views

Can thunderstorms curdle milk?

When I was 13, my sister and I spent the summer on a dairy farm. We worked in the creamery, where (twice a day) we bottled fresh raw milk, as well as cleaned all the equipment. It was really a fun ...
23
votes
1answer
884 views

Does water bring out the flavor and aroma in scotch?

I've often heard that adding just a few drops of filtered, room termperature water to scotch helps to "bring out the flavor and the aroma." The scotch guy at my store told me it involves a chemical ...
21
votes
3answers
6k views

Has carbon dating indicated that live humans are 4000 years old?

A friend of mine told my wife that carbon dating is unreliable because it has been performed on live humans and indicated that the test subject(s) are 4000 years old. Is there any truth to this claim?...
4
votes
2answers
393 views

Is it almost impossible to find animals that are not contaminated by chemicals?

From Chapter 3 of Rachel Carson's seminal book, Silent Spring (1962): FOR THE FIRST TIME in the history of the world, every human being is now subjected to contact with dangerous chemicals, from ...
8
votes
1answer
593 views

Does wetting your toothbrush have health effects?

Today I read a tweet from @Funny_Truth: "Don't wet your toothbrush after you put toothpaste. Water will reduce the healthy benefits of toothpaste." Is it true? If it is what does actually ...
8
votes
0answers
299 views

Do covered [drinking water] reservoirs cause health risks compared to open-air reservoirs?

Bull Run Waiver.org is a political group opposed to covering drinking water reservoirs in Portland, Oregon. They making a number of claims that closed reservoirs introduce greater health risks than ...
10
votes
0answers
266 views

Do vacuum wine stoppers help preserve wine?

Vacuum wine stoppers are very popular, but I don't know how effective they actually are. I've been unable to find any scientific results. I have found plenty of people who have bought the products and ...
8
votes
0answers
2k views

Does baking soda eliminate a cockroach infestation?

My questions concerns a population, more significant than simply exterminating an individual cockroach. Claim: http://pest.tips.net/T003494_Kill_Roaches_with_Baking_Soda_and_Sugar.html If you're ...
35
votes
2answers
488k views

Is CPH4 from science fiction movie 'Lucy' real?

In the science-fiction film Lucy, the titular character takes a drug called CPH4 that increases her brain capacity. The writer and director of the film, Luc Besson, claims in several interviews that ...
5
votes
1answer
339 views

Do styrofoam cups cause health issues?

A friend of mine posted a link on Facebook to a Change.org petition to stop using styrofoam cups at Dunkin Donuts. Amongst their complaints was that styrofoam cups caused health issues for the staff ...
4
votes
1answer
3k views

Are harmful chemicals leached from ordinary Ziploc bags when used for sous vide cooking?

Sous vide cooking is a style of cooking where you seal meat in bags and soak it in water at a specific temperature for a very long time, sometimes days. Some worry that in this process, harmful ...
2
votes
1answer
391 views

Are snowflakes incapable of four-fold symmetry?

The following blog post says (emphasis added) Walking by our neighborhood’s great institution of learning this evening, I was pleased to see paper snowflakes in a window. Pleased, then ...
21
votes
3answers
13k views

Is sugar one element away from cocaine or any other drug?

I've heard multiple times through out my college and early work career that they believed sugar was one element away from being cocaine (or some other drug). However, none of these people had a ...
5
votes
1answer
710 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 ...
10
votes
2answers
3k views

What do we know about red mercury?

My friend, known as a liar, came to me two days ago and told stories about red mercury, something I never heard about. Could do magic, the pharaohs used it. 1 kg worth 30 million dollars, used in ...
3
votes
2answers
326 views

Have chronic conditions such as heart disease, prostate cancer, infertility ever been linked to everyday exposures to chemicals in food?

Claim: http://www.ewg.org/research/mens-health "There has been significant research in recent decades showing that chronic conditions such as heart disease, prostate cancer, infertility may be linked ...
8
votes
2answers
631 views

Is pouring liquor from a bottle onto a flambé an explosion risk?

Several TV chefs including, the late Julia Child, have advised against pouring liquor directly from the bottle to a pan to be ignited, as 'flames could travel up the stream and ignite the bottle' ...