Questions tagged [chemistry]

The science of matter and the changes it can undergo.

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29
votes
2answers
30k views

Is margarine “one molecule away from plastic”?

I've heard the claim that "Margarine is only one molecule away from being plastic" several times. Usually from friends who think they've heard it from some reliable source. I've also read a couple ...
26
votes
1answer
6k views

Are some laundry detergents better than others?

As we were looking for laundry detergent yesterday, I noted that my wife was quite swayed by brand reputation/impressions than price. She stated that she didn't think one type of detergent really ...
19
votes
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 ...
41
votes
3answers
3k views

Is monosodium glutamate (MSG) bad for you?

Anecdotal evidence blames the consumption of MSG for several symptoms such as headache, nausea, weakness, heart palpitations etc. Most migraine literature cites MSG as a potential trigger (example) ...
35
votes
2answers
495k 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 ...
25
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4answers
15k views

Is fluoride in water an industry waste product?

There are many claims made about the source of fluoride in our water, some examples are: Intentional dosing of municipal water supplies with fluoride waste products from industry Increased cancer ...
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 ...
21
votes
2answers
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 ...
13
votes
4answers
12k views

Do apple seeds contain arsenic?

I've heard recently that apple seeds contain arsenic. Is this true? Should apples not be eaten then?
8
votes
1answer
814 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 ...
5
votes
1answer
776 views

Long term effects of sucralose

I can't find any information about long-term negative effects of Sucralose consumption other than a very high toxicity level claimed by several studies. There is lots of speculation online about how ...
21
votes
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 ...
34
votes
4answers
6k views

Is warm water more effective than cold water for washing one's hands?

When washing my hands, I was always told to use warm soapy water. However, is there any chemical or biological reason why warm soapy water is more effective to cold soapy water when trying to ...
18
votes
1answer
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 ...
22
votes
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? ...
14
votes
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 ...
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 ...
34
votes
2answers
40k views

Do magnetic water softeners work?

I'm extremely skeptical of the idea of magnetic water softeners (strong magnets attached to pipes), but desperately wish it were true because I hate lugging 40# bags of salt out to my well house in ...
30
votes
1answer
67k 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,...
30
votes
2answers
87k 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 ...
22
votes
2answers
2k views

Is an ice-cream tub made of a single molecule?

Background In my answer to another question, I repeated a claim made to my class by my high school chemistry teacher. I didn't reference it, because the relevant FAQ suggests high school science can ...
12
votes
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, ...
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. ...
7
votes
1answer
23k views

Do the water filters in Bobble water bottles work?

A retailer claims that Bobble water bottles: Filter your own bottled water with this unique and patented set of two Bobble Water Bottles. An active carbon filter eliminates toxins and harmful ...
6
votes
0answers
334 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
2answers
458 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 ...
3
votes
1answer
3k 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, ...