Questions tagged [chemistry]

For questions that have to do with chemistry, chemical reactions be they biological or artificial, or the industrial processes of chemistry.

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6
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3answers
486 views

What is the range of lava/magma viscosity on exoplanets; what conditions would have the least viscous lava lakes?

On planets of have different temperatures, conditions and chemical makeup of the lava/magma, what would be the least viscous lava around? (Relevant to an earlier question - What would an efficient ...
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2answers
123 views

Carbonation… in Space? [closed]

Given a zero-G environment (such as a modern space vessel) how would a carbonated beverage react? Please address one or more of the following: A free-floating sphere of a water/carbonic acid mixture ...
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4answers
424 views

Making freezer arrows using endothermic reactions

Fire arrows are a pretty common trope, however, according to Lindybeige, they're not really that great. In contrast to fire, what if you make arrows that create an endothermic reaction upon impact, ...
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3answers
524 views

Could Fluorine from plasma impart further damage?

I'm still designing the ultimate plasma rifle, and I'm interested in a part the reality of a certain part: Currently I'm justifying using fluorine gas in my world's plasma weaponry with the following ...
69
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10answers
19k views

Is there a real life substance like movie acid?

Is there a real life chemical or compound that exhibits the characteristics of stereotypical movie acid? From what I know of most acid, it is usually clear or just a little cloudy, but I'm looking ...
7
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1answer
219 views

Phonosynthesis - ecosystem where “plants” extract energy from sound, not light

I have an idea about a planet that is cold and dark, but very loud. Constant rolling storms, crashing glaciers and icesheets, earthquakes, volcanoes and so on. Instead of photosynthetic plants, as on ...
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2answers
419 views

Are bones generally harder to corrode than human skin? [closed]

I am curious to know if bones generally are harder to corrode than human skin in our world and at what rate? I was thinking to compare how a skeleton would react to corrosion compared to a regular ...
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8answers
3k views

Initial conditions for a fluorine hellscape

I'm curious what it would take to get a planet with so much free fluorine that you can have an atmosphere of predominantly or purely fluorine. I realize how improbable a planet like this is, so I'm ...
16
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5answers
3k views

Is there an organism or chemical substance capable of petrifying humans?

As part of a project, I am exploring a fictional biological/chemical weapon that can rapidly (and indiscriminately) kill by way of petrification. To clarify, By petrification, I’m not necessarily ...
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2answers
349 views

What compounds would be required for a photosynthetic reaction resulting in flourine gas?

Primordial Earth was buried in carbon dioxide. When life started, it was with algae using energy from the sun to crack the carbon out of carbon dioxide, with the byproduct of releasing the corrosive ...
33
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12answers
7k views

Solid material made from human blood

Is it possible to create a room-temperature solid made from 100% human blood? One of my stories features a girl who has the passive ability to block the superpowers of anyone in a 100-meter radius. ...
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7answers
2k views

How can Bronze Age people make hazmat gear for chlorine trifluoride?

How can Bronze Age people make hazmat gear for chlorine trifluoride? The ClF₃ is produced biologically, just as fruits produce acid or capsaicin. This alternate world just happens to have bacteria — ...
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4answers
216 views

Is a long lasting volatile compound that ignites/explodes on contact realistic?

So the desired result is a compound that can be left in relatively isolated area, isolated such that weather has no direct affect on the area, and that will ignite/explode when touched, even after ...
70
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18answers
13k views

Mineral that explodes when cooling down

While playing old games, I encountered a friend I knew from SciFi series and games alike, the Merculite missile. While thinking about what Merculite might actually be (and linking it to a mineral from ...
3
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1answer
920 views

Alchemy in a Steampunk setting [closed]

Background to the question: early XVIII century (1711), in a fictional steampunk city, in the Balkan peninsula. There are no big changes in the world, aside from the recent use of steam as the main ...
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9answers
899 views

What can I add to an oxygen/nitrogen atmosphere to make it unpalatable or poisonous to humans, yet stable and breathable to local creatures?

I have a roughly Earth-like planet in a solar system some distance from ours. The atmosphere of this planet is largely similar to that of Earth, but particularly, has a somewhat higher oxygen content; ...
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15answers
6k views

How can I make medieval folks addicted to food?

Let’s say I have a time machine and I travel back to medieval Europe. I befriend a girl and she needs my help to save the business of her mother: a restaurant, inn, tavern, etc. I travel back to the ...
3
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2answers
509 views

What's strongest non-nuclear explosive I can make with nanotechnology?

Can I use nanotechnology to make the strongest possible non-nuclear explosive (when compared to the equal amounts of other explosives) or are we already at the peak-level of what can be achieved with ...
6
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2answers
450 views

Spatial dimensions with non-equivalent dimensional eigenvalues

Our universe is described as having three physical dimensions, plus one time dimension, where the eigenvalues for the physical dimensions are all the same, but the eigenvalue for time is opposite (x, ...
6
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3answers
488 views

Geography and Appearance of an nitrogen/ammonia planet

The planet in question is this one. Approximately three quarters the size and half the gravity of Earth, an atmosphere 25% as dense as the Terran one which mainly consists of Nitrogen with small ...
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1answer
131 views

Water replacement on a world with a nitrogen-rich atmosphere

The planet in question is this one. The atmosphere mainly consists of nitrogen and is approximately a quarter the density of Earth's; I chose surface temperatures ranging from -50°C to 0°C. I need a ...
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5answers
2k views

Sky color on a planet with an atmosphere consisting mainly of nitrogen

A planet approximately 70% the size of Earth with a surface pressure of approxiamtely 0.25 bar at sea level. The atmosphere consists of the following gases: Nitrogen (98%) Oxygen (1.5%) Carbon ...
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4answers
284 views

Can this food give off enough energy to melt metal?

I'm currently writing a story, but however I'm having trouble with one part. The hero is faced with a situation where he has to create a fire strong enough melt 5 kg of copper, and he only has a match ...
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4answers
1k views

Alchemy in a Forest

In my world, the knowledge of science is largely lost, but many of the practical facts are still remembered. Chemistry morphed back into alchemy. My main character grew up as a peasant in a city's ...
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5answers
3k views

Outer Space Flamethrower

I know from here that a flame thrower can operate in deep space if specially built. However, I want to know if using a flamethrower on a spaceship in space could have any tactical benefits. Could a ...
7
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1answer
3k views

What alloy could replace brass in most applications?

In my world, zinc is useful as an anti-magic material. This ability manifested shortly after the discovery of magic, and now zinc will erode and decay when exposed to magic, dissipating into ...
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4answers
4k views

How much TNT would it take to blow up an ordinary suburban home? [closed]

How much TNT would it take to blow up an ordinary suburban house? Also, can you make TNT or any similar high explosive from the ingredients found in a typical kid's chemistry set? This is for a story ...
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5answers
727 views

What useful materials exist on a lifeless planet?

Supposing you are trying to colonise planet that has no life what-so-ever but is otherwise an earth analogue. First thing that I realised is that there would be no oil. So they would need to make ...
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5answers
1k views

What happens to excess Hydrogen?

I'm developing a magic system that is supposed to be pretty close to real science. I have a spell "convert element" described as follows: Elements are converted by adding or subtracting protons. The ...
7
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2answers
653 views

Unlimited Stellar Fusion Thought Experiment

As far as we know stars have a limited fusion cycle. Once they fuse elements up to the element iron, there is no subsequent energy that can be released through fusion, given the inherent atomic ...
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2answers
156 views

Setting the scene - Alien Mineral, Mass Infertility

I'm amidst crafting a world but not sure how to fill in a few gaps. Your suggestions and ideas would be greatly appreciated! I've got a scenario where an extraterrestrial meteor hits planet earth. It ...
70
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14answers
16k views

Is it possible to make an alloy that melts at low temperatures and solidifies at high temperatures?

In my world I've created an alloy that can melt at low temperatures and solidify at high temperatures. This got me wondering, is something like this actually possible/does it exist. With most ...
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1answer
103 views

What would be required to create a technology/system to replace agriculture? [closed]

I'm thinking of some sort of machine the size of a house or factory building which produces nutrient paste/cubes/wafers/pills using some of the basic materials/chemicals and energy which are required ...
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3answers
120 views

Is planetary chemistry relative to distance from the sun? [closed]

Regarding the likely chemical composition of earth-like planets - would the distance of a planet from its star change the relative abundance or poverty of certain elements? Or would other factors, ...
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18answers
105k views

Does anyone know of a poison that can be ingested and is undetectable in autopsy? [closed]

I am a fictional writer and need info on a poison that can be put in food and is undetectable in autopsy. Symptoms also can't be too messy, no specific time in how long it takes to take effect.
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4answers
613 views

How to communicate when humanity loses all sense except smell?

This question is focused on a purely chemical messaging system for humans that provides the same degree of nuance that spoken human languages convey now as well as all the information that smells ...
4
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4answers
217 views

In a parallel universe can there be non-carbon based lifeforms [duplicate]

In our universe, an organic compound is defined as a compound that contains carbon with an oxidation number lower than +4 (Citation needed.). In a parallel universe where chemistry laws are different, ...
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2answers
267 views

Is it possible to synthesize a nutritional food source entirely from electricity to replace land based agriculture?

Lets say you have a geothermal or nuclear power plant and nearby you have system which converts that energy into nutrient porridge. This nutrient porridge must have everything the human needs to ...
6
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1answer
210 views

Can the laws of physics be changed to inhibit chemistry but permit technology?

Some more-than-usually clever boffins have knocked up a system that allows them to form portals into a region where the laws of physics are rather...different. An object that is fired through one ...
1
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1answer
108 views

If the oxygen is introduced into the flammable gas by a tube, does it produce stable combustion? And What does the flame look like? [closed]

If the oxygen is introduced into the flammable gas by a tube, does it produce stable combustion? And What does the flame look like? And is the flame red in center or blue in periphery? And the shape ...
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3answers
264 views

What reacts to nitrogen by showing signs of color? [closed]

I was watching a video about nitrogen and started to think what would make nitrogen react by showing signs of color on the physical side of things without being harmful to surroundings. And this would ...
5
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1answer
216 views

What are the limits of superatom engineering?

Context Recently, scientists have began researching superatoms and supermolecules in depth. The premise is that existing, natural elements can be rearranged into clusters, in the lab, to exhibit ...
3
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1answer
135 views

Earthlike World With Copper-Contaminated Water?

I'm trying to build a semi-plausible world where there is native flora and fauna, but the world is subtly not quite right for human habitation. I thought that having significant amounts of copper in ...
3
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2answers
254 views

Could we seed Earth's atmosphere with hydrogen?

Suppose the chemical reaction: $$3CO_2+2H_2\rightarrow 2H_2O+2O_2+3C$$ This reaction could be used to filter out $CO_2$ from the atmosphere, slowing down or reversing climate change. The solar system ...
3
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2answers
188 views

Are there any elements that wouldn't be useful to a self-replicating machine?

I wanna have a scene where the protagonists see the gray goo excreting human skeletons because they can't use the calcium in them for anything. But is this true? Would a self-replicating machine ...
7
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2answers
323 views

How would technology adoption of Lithium Air battery work?

I want to have a world when humans got serious about global warming and succeeded in making Lithium Air battery work. Since the lithium air has same potential energy density as gas, and electric ...
5
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1answer
1k views

Would a planet with sulfur dioxide atmosphere be feasible?

I'm working on a planet containing an atmosphere composed mainly of sulfur dioxide, with, notably, only trace amounts (if any) of oxygen. Is such a planet one that could realistically pop up in our ...
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3answers
411 views

Are there any other colors to radioluminescence?

You are probably aware of that certain radioactive things glow, usually a soft green. But is there any way to add compounds or what have you to achieve a different color, say, orange? I know ...
4
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1answer
199 views

What conditions would support mercury as bodily fluid?

I got to thinking a simple throwaway thought on this video where this dude flushes mercury in a toilet (in a closed loop) For one thing, it's easy to think about the properties of mercury (mostly its ...
88
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13answers
24k views

Lembas bread (2000 Calories per bite)

In the lord of rings the elves invented an incredibly nutritious bread/biscuit, as Legolas clearly says only a small bite is just enough to satisfy the needs of an adult man for 1 day. An adult ...

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