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Questions tagged [chemistry]

The science of matter and the changes it can undergo.

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2answers
7k 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 ...
15
votes
1answer
3k views

Did January 2014 American snowfall char and burn when exposed to fire?

This site, ‘Fake Snow’: Videos In Multiple States Show Strange Snow That Doesn’t Melt Normal, Burns, Smells of ‘Plastic’, shows several videos and images of people burning snow they collect from ...
12
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1answer
1k views

Did cows in Germany blow up their own barn by farting?

As reported by Reuters, Flatulent cows start fire at German dairy farm - police Methane gas from 90 flatulent cows exploded in a German farm shed on Monday, damaging the roof and injuring one of ...
2
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1answer
2k views

Do charcoal bags help removing volatile organic compounds (VOCs)?

I have read some claims that charcoal bags help removing harmful volatile organic compounds (VOCs). Bamboo Charcoal helps improve indoor air quality by absorbing and trapping odors, allergens, ...
10
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1answer
958 views

Is consuming drinking water stored in PET bottles harmful

It's a common practice in India to store drinking water in Polyethylene Terephthalate(commonly know as PET) bottles. It is also claimed in many health forums & newspapers articles that PET bottles ...
2
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0answers
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 ...
28
votes
1answer
187k views

Does putting salt into a wound make the wound worse?

It's commonly believed that the idiom "rubbing salt into the wound" is derived from a literal action of making things worse. Wiktionary claims the literal act was done for torture: Derived from ...
18
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1answer
32k 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 ...
4
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2answers
826 views

Can a body be dissolved by a few liters or gallons of Hydrofluoric acid?

In the "Cat's in the Bag..." episode of Season 1 of "Breaking Bad," characters are shown with 4 gallon-jugs of Hydrofluoric Acid that they use to dissolve 2 adult corpses. Chemistry is a major plot ...
10
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2answers
5k views

Does (liquid) nitrogen react with chlorine or other chemicals in a swimming pool?

Various news outlets are claiming that people suffered from poisoning after liquid nitrogen was poured into a swimming pool. The intended effect was to produce mist. For example,the telegraph ...
15
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2answers
3k views

Is there formaldehyde in the glue of bamboo cutting boards? Is it dangerous?

Many purveyors of bamboo cutting boards make a point to advertise that the cutting board is made from formaldehyde-free glues. There seems to be fairly widespread advise to avoid formaldehyde in ...
4
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0answers
840 views

Does “liquid-injection damp-proofing” work to water-proof walls?

There are technologies for sale, especially in Germany, to drill holes in the walls of a cellar, and inject into the concrete or masonry a liquid, such as Sodium Silicate The manufacturers promise ...
3
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1answer
2k views

Does drinking water from plastic bottles contaminate your blood? [duplicate]

I wanted to know if there is any research on the issue Daniel Vitalis raises on bottling water here (5th minute and on). He claims that if one drinks water bottled in plastic bottles one will ...
2
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1answer
767 views

Was there a cocktail named 'Mickey Slim' that used DDT as an ingredient?

According to Wikipedia, a Mickey Slim is a cocktail made by combining gin with "a pinch of DDT" which provided an experience similar to (the original) absinthe. The source appears to be The Dedalus ...
8
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0answers
1k views

Would baking soda and vinegar clean hair, and how?

There's a popular hair cleaning regime circulating in the 'green' blogs called the "no 'poo method." Rather than using shampoo, one rinses the hair with a tablespoon of baking soda in a cup of water, ...
4
votes
1answer
346 views

Did James Lovelock deny that CFCs destroyed ozone?

In the discussion threads of one of the answers to this meta question How much can we trust peer reviewed scientific literature? EnergyNumbers alleged that James Lovelock had originally denied that ...
12
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2answers
26k 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 ...
14
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1answer
2k views

Is testosterone responsible for typically “male” behaviour?

On the English Language and Usage stack exchange, two people asked what was meant by "testosterone-charged", as in the following quote, from the story "2 States: The Story of My Marriage" by Chetan ...
1
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2answers
1k views

Are there currently any tests available to diagnose fluoride or fluorine toxicity?

That's what I read here: http://www.merckmanuals.com/professional/nutritional_disorders/mineral_deficiency_and_toxicity/fluorine.html No tests to diagnose toxicity are available.
3
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0answers
556 views

Are bleaching powders effective cleaning agents?

The claim from the manufacturer: Have you seen a stain on your clothes that you can't seem to remove? Don't fear! Vanish Oxi Action Powder contains Oxi Powerlift which removes all types of stains, ...
4
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0answers
605 views

Is typical indoor concentration of VOC correlated to concentration of CO₂?

A vendor of VOC (Volatile Organic Compound) sensor claims the VOC concentration correlates highly to CO₂ concentration in a typical conference room: Figure 2 illustrates the correlation of true CO₂ ...
9
votes
1answer
3k views

Is bamboo charcoal safely edible?

Bamboo charcoal is made up of pieces of bamboo, which are taken from plants five years or older and burned inside an oven at temperatures over 1000°C. Bamboo charcoal is well known about its high ...
8
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0answers
978 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 ...
11
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1answer
3k views

Is it possible to stack liquids of different density scale on top of each other?

I came across q picture on the net and now I'm skeptical that it's possible. I know liquids from different density scale wouldn't mix easily but stacking them on top of eachother with perfectly ...
6
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1answer
51k views

Is Paraffinum liquidum (mineral oil) in cosmetics dangerous?

Paraffinum liquidum can be found in a lot of cosmetic products. Some articles say it is harmless but the other half said it causes harmful effects such as the premature aging of the skin. Examples ...
12
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1answer
2k views

Did Donald Duck accidentally use methylene in a comic before it was discovered?

From Good Comics: In 1963, the Disney Studio learned just how wide and faithful a readership Barks had. A letter arrived from Joseph B. Lambert of the California Institute of Technology, ...
9
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1answer
5k views

Does Dimethyl Sulfoxide (DMSO) speed the healing of wounds?

My wife is currently suffering from a small ulcer which is refusing to heal and a friend of hers suggested a topical application of DMSO to improve healing time. Please not that I am explicityl not ...
18
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1answer
2k views

Does lemon juice slow the oxidation of guacamole?

It is common belief that adding citrus juice (or in some claims, any acid, including ascorbic acid/vitamin C, vinegar, tomatoes, etc) to guacamole will reduce browning. Examples of the claim: ...
7
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0answers
165 views

Do reusable plastic water bottles leach dangerous chemicals? [duplicate]

Possible Duplicate: Is refilling water bottles bad for you? Several articles claim that the 'chemical leaching' from reusable clear plastic water bottles leads to toxins in the water, not even ...
20
votes
1answer
15k views

Is Cesium-137 detectable in all wine bottled after the 1940's?

In the White Collar TV Episode Bottlenecked it was claimed that a test of all vintage wines bottled before the ABomb would not contain any Cesium-137 but wine bottled in the years since all contain ...
9
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2answers
4k views

Would tying sulphur to the feet of birds allow you to burn down a house?

According to legend: The last vengeance took place in the year 946 when Olga traveled around the land of the Drevlyans in order to gather tributes. She besieged the town of Iskorosten, which ...
8
votes
2answers
16k 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 ...
30
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2answers
32k views

Is biting a gold coin a working method to verify its authenticity?

Julia Murray & Kelsey Serwa In movies you commonly see treasure hunters, pirates, thieves, ... bite down on a gold coin to verify it's real gold. (Gold Medal winners often pose with the medal ...
21
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2answers
1k views

Do harmful chemicals migrate from the container into the food if you microwave the food in a plastic container?

In a comment to the best answer to question 582, Muhd writes: "I would add that it is also unhealthy if you microwave in something that is not microwave safe as toxic chemicals could migrate into the ...
19
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1answer
2k views

Is the Coca-Cola recipe a secret?

Is the Coca-Cola recipe a secret? I would like to draw attention to the distinction between a recipe and composition: Composition: a list of all ingredients, including quantity/proportion. Recipe: ...
2
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0answers
225 views

Are plastics making us fat and giving us diabetes?

A recent widely reported news story (example report from the Independent) suggested that one explanation for the modern rise in obesity was not too much food or two little exercise but many of ...
22
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1answer
5k views

Would a human's blood suddenly boil (or eyes/body explode) in a vacuum?

I was once given a question in the popular quiz-show game, You Don't Know Jack, that went something like: You find yourself suddenly ejected into space. Which of these gruesome things happens first? ...
4
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1answer
378 views

Does the caramel colouring previously used in Coke and Pepsi in California cause Cancer?

California has recently made legislative changes that required Coke and Pepsi to affix cancer warning labels to their soda products. From the news story: A representative for Coca-Cola, Diana Garza-...
19
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1answer
3k views

Do airplanes release biological or chemical agents, forming trails?

Since the topic of the week is conspiracy theories, here's one that I've had re-iterated at me a few times. Supposedly these white stripes after airplanes is created by airplanes releasing biological ...
9
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2answers
1k 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, ...
7
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1answer
1k views

Are synthetically produced chemicals not found in nature more likely to be harmful than naturally occurring ones?

Since everything is made from chemicals the often made claim that we should avoid food that doesn't contain chemicals doesn't make any sense. But the underlying idea that synthetic chemicals are ...
8
votes
1answer
776 views

Are dioxins the most toxic chemicals known to science?

Dioxins are implicated in The Seveso disaster in Italy and the lingering disputes about deformities and birth defects caused by the use of the Agent Orange defoliant in the Vietnam war (Wikipedia ...
14
votes
3answers
7k 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 ...
14
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2answers
20k 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,...
121
votes
5answers
23k 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 ...
8
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3answers
9k 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?
62
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2answers
7k views

Are old glass panes thicker on the bottom due to “flow”?

I ran into this common belief today, and was surprised that it has not been addressed here before. I think this belief is common enough that most anyone has heard it. Especially if they are touring ...
11
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1answer
1k views

Can a dead mouse sealed in a can of soda dissolve into a jelly-like substance in one year?

A soft-drink company argued in a "dead mouse in a can of soda" case that an intact body of a dead mouse is unlikely to be found inside a can of soda because the dead mouse would have been dissolved by ...
3
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1answer
426 views

Can processed coconut extract, corn, tree sap, potatoes and grass be combined to be used as a calcium and lime remover?

This product claims to be an effective calcium and lime remover. Is this going to be any more effective than a spray bottle with water and some elbow grease? They claim it uses a thing called ...
10
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1answer
6k views

Is Oxycontin pharmaceutical-grade heroin?

I was watching a documentary about the Oxy pipeline from Florida to Kentucky this weekend where a sheriff made the claim that Oxycontin was pharmaceutical-grade heroin. This is not the first time I ...