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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How would chemosynthesis using ammonia(NH3) work?

On a terrestrial planet with a high amount of ammonia vapor in the atmosphere, would any organism have a strong enough incentive to develop some form of autotrophic chemosynthesis that derives energy ...
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The students have blown up the school using stuff that looks like snow. How?

In Hungarian, there is a new-ish folk-song sung by school-children who dislike school whenever it snows to the tune of Twinkle, twinkle, little star: Hull a pelyhes dinamit, Robbantsuk fel a ...
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2answers
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A character steps outside in the upper atmosphere of Venus- how sunburned is he?

For complicated reasons our hero's blimp in the Venus atmosphere at an altitude of 50 km gets a tear in it and sunlight floods inside (there is no gondola, the blimp is a semi-ellipsoid of breathable ...
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7answers
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Good explanation for why aliens can't build nuclear engines?

"Aliens used uranium and plutonium to generate energy for thousands of years. However, by the time they got into space exploration, they've used up every last bit of it. That's why they'll have to try ...
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4answers
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Could I build a nuclear reactor based on Bernoulli's principle?

So I was recently inspired by the answers that I saw on this stack exchange to the following question: Feasibility of H.G. Wells' Continuously-Exploding Atomic Bombs And it occurred to me that ...
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5answers
252 views

What improvements in the human body will allow it to withstand critically low or high pressure?

My question: What is it that needs to be improved or added to the human body so that it can withstand critically (fatally) low and high (if, my genetically modified person is underwater or a very ...
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13answers
3k views

Substance that changes quickly from liquid/gelatinous to solid?

Question: does a liquid or gelatinous substance exist that once outside a body could solidify and be hard enough to be used once as a tool? The setting is low fantasy without magic, yet with ...
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3answers
201 views

The Properties of Flaming Fire Magic

Magical fire is often depicted as flames. To get fire and flames the right mixture of oxygen, fuel and heat is needed. Assuming that the magic only provides the heat, there are only two chemical ...
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0answers
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Alternative Ozone Layer [duplicate]

The reason for the high level of Oxygen in the atmosphere today is due to the billions of years worth of photosynthetic prokaryotes releasing it as a waste product. Of course, in the higher levels of ...
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3answers
1k views

How far can technology on a planet made of just hydrogen, carbon, and oxygen be developed? [closed]

The planet only has three elements to work with: hydrogen, carbon, and oxygen. Organic life forms also exist on the planet. They have no access to other elements. Given (based on) our organic ...
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4answers
334 views

Alcohol-based organisms?

Would it be possible to have an organism to be based on alcohol, rather than water? Complexity does not matter, but a complex organism would be favourable. their environment would be in oceans of ...
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3answers
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Eating Titan's oceans

Imagine a Mark Wattney-like scenario, only on Titan and involving a decent-sized base being isolated instead of a single person. There is not, and never has been, the possibility of growing potatoes. ...
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2answers
185 views

How to make a microbe that can eat metal and breathe hydrogen?

I made an organism called the Skarlix for a art/xenobiology project called Sagan 4. The Skarlix is a eukaryotic, somewhat amoeba-like organism that "eats" various metal compounds and "breathes" (...
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15answers
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Is there a material or method to allow “swimmable” coins?

I want to know whether there is a way to make coins that are "swimmable" in the fashion of Scrooge McDuck. My inquiry is based off this Family Guy meme from Pinterest The coins don't necessarily ...
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4answers
101 views

How to transform a cells energy source into explosives

I'm basically searching for an ATP that can be used to supply cells and also have its energy extracted efficiently into a basic form of explosive material (the stronger the better) without a lot of ...
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2answers
193 views

is there a way to make water armor and condense the water?

i want to make an armor made of liquid, for example like dew accumulate and attached to the person or just dip into water and the water attached/carried on (just example), but it also condense the ...
3
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1answer
178 views

How can I achieve the results of Pompeii with divine energy?

Gods occasionally visit the mortal realm for particular reasons, such as certain festivals or to do battle against demonic forces in an invasion. In the case of the latter, a god has to be careful ...
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0answers
154 views

What would seas of non-water liquids be like? [closed]

First off, is a sea of a non-water liquid even plausibly likely to occur on a given exoplanet? Secondly, what non-water liquids would be most likely to form into large bodies? How would those liquids ...
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2answers
172 views

Recreating dragon fire

In Anne McCaffrey’s series 'The Dragonriders of Pern', she describes her dragons chewing on rocks containing phosphine — a chemical made of one phosphorus atom and three hydrogen atoms. In gas form, ...
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1answer
80 views

Can I improve internal combustion engine efficiency by slightly changing vacuum permittivity?

Energy released in an exothermic reaction depends on bond energies of reactants and products. Since molecular bonds are electric in nature, at the first glance, increasing Coulomb's force should ...
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1answer
115 views

what essential material or ingredients in modern gunpowder that if changed to be expensive or rare, can ruin the evolution of advance/modern gun?

as the title, what materials or ingredients in modern gunpowder that if change to be expensive or rare to get, can ruin the evolution of advance gun or can turn modern gun obsolete or undesirable ? i ...
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3answers
281 views

Sword that is limp when in sheath, and hard when drawn?

I want to create a sword that when sheathed remains limp/flexible or soft but upon being unsheathed it become hard like common steel. So, something like the sword going soft when not exposed to ...
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3answers
138 views

What planet composition is need to have giant human that make earth human similar in comparison to ant size to them?

as the title say my question is: What planet composition is need to have giant human that make earth human similar in comparison to ant size to them? i know realistically and probably its imposible ...
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1answer
103 views

Could life arise using iron pentacarbonyl as a solvant?

Iron planets are planets which lack a significant mantle. These planets are essentially lone planetary cores. Since water and iron are unstable together iron pentacarbonyl and other exotic metal-based ...
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2answers
151 views

How would oceans of supercritical CO2 on Venus-like exoplanets look like/behave?

Carbon dioxide turns supercritical above a pressure of 73 atm and 304.25 K (31.10 °C). The surface of Venus fullfils these conditions. The density of the air at the surface is 67 kg/m3, which is 6....
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3answers
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Burning to increase mass? [closed]

I just saw a post that suggested that 1 gallon of gas (6.3 lb) burned through a combustion engine generates 20+ lbs of CO2. I am sure they just missed a decimal or did not remember correctly what they ...
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2answers
124 views

what would it need to create indestructible bubble?

Not exactly indestructible, at least after flying to certain height it may pop out. I mean something like the bubble is as hard as stone or steel but still elastic and light to float like bubble, and ...
8
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3answers
268 views

How could formamide lakes form on an exoplanet?

I've been recently looking into alternative biochemistries for life and the environments were these could be found. I already asked a question about how ammonia oceans might form a while back. Today I'...
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5answers
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Doing chemistry under water?

Aquatic races are usually assumed to be stunted in technological development by the inability to create fire or forge metals. But what about doing chemistry at all? The development of chemistry in ...
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1answer
69 views

Life-supporting climate for an organolithium planetary environment?

I'm looking to design one of my warring planets around organolithium chemistry with seas and precipitate primarily composed of a clear organolithium solvent liquid - possibly ammonia. I've searched ...
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5answers
181 views

The Itsy-Bitsy Insect Has Made a Web. How Differently Would it Look From Spider Web?

In an alternate Earth, a mass extinction wiped out a percentage of the most successful phylum ever--Arthropoda. All that survived of the class Arachnida were the really small varieties--the ticks, ...
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2answers
221 views

Is there a scientific way to make a metal that can pass through other metals?

I want to create a sword that can pass through an opponent's weapon/armor (mostly made of metal like steel/iron, bronze, copper, lead, silver, gold, etc) like it was ethereal or hologram thing upon ...
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7answers
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Plausability of combustion light-gas guns replacing conventional guns in the future?

My scifi settings armory is filling up with many interesting weapons. However, while energy weapons, Gyrojets, Tangler guns and the like outperform slugthrowers in special applications, concentional ...
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1answer
171 views

Hidden specks will blow up the world if overheated: how bad a thing is this?

I'd encourage you to take about 4 min to read the whole post. Multiple masses of parabanic acid appear at random around the world (but see Context and constraints), displacing any matter in their way ...
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3answers
154 views

How severe can an Iron Aversion be?

I like the idea of elves having a distinct weakness against iron, to the point where they're intensely scared of it and can't stand the touch of it. My question is: Assuming the Elves are mostly like ...
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4answers
100 views

Scientific reason for incense burners to be an effective ward against malevolent “spirits”

Malevolent Spirit: Malevolent spirits are swarms of barely visible machines that have accidentally been imprinted with a deceased person's memories. They posess swarm intelligence and communicate with ...
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2answers
91 views

Light-activated Expanding Chemicals

In my world, electricity has not yet been discovered, but they have somehow still managed to attain a technological advancement similar to modern times. I am currently trying to tackle the problem of ...
27
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8answers
7k views

What elements would be created in a star composed entirely of gold?

I'm working with the idea of creating a sun made out of pure gold. Of course, this would be completely man-made. Why would anyone want to do this? Because I want a cool concept like that in my story! :...
4
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1answer
80 views

Can an Insect's Pheromones Be Visible?

In my story, there is a type of bee that releases a pheromone during mating season that is visible at night in brightly lit areas. This is similar to how you can see rain more easily at night if you ...
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2answers
95 views

Is it possible to transmutate hydrogen into the chemicals and fuse them to create bread? [closed]

I was wondering whether it would be chemically possible to take hydrogen from the air and transmute it into the required elements used to make bread. It doesn't have to be bread, it could be any food ...
3
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1answer
91 views

What could cause Fluorocarbons to be present in an Earth-like atmosphere?

Pretty simple (in theory that is) question for one of my worlds. I heard carbon fluorides are intense greenhouse gases but otherwise harmless and didn't lead to large issues (atleast none that I could ...
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1answer
100 views

what liquid or substance for rainbow colours oil patterned alien skin?

I was thinking of an alien humanoid charcter for my super powered beings story that would be completely black and faceless with similarities to venom and its strings of symbiotic goo but this ...
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3answers
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Iron-age tools, is there a way to extract heavy metals out of a creature?

Assume a location which is heavily polluted with dust of several types of elemental metals (copper, silver, nickel, cobalt etc) or their respective oxides and salts (whatever is stable in humidity and ...
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2answers
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What rare elements would be most needed in building a space station beyond the Earth?

If people were attempting to build a space station beyond the Hill Sphere, (outside of the area where Earth's gravity dominates), and wanted to mine the raw materials for the station from dwarf ...
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2answers
198 views

Is an earthlike planet with ammonia oceans even plausible?

The idea of a planet where ammonia replaces water as the dominant liquid in the environment is quite popular in science fiction. I tried to develop a scenario where these kind of oceans are plausible ...
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6answers
146 views

Powering a Nanobot Via Nuclear Fission of Its Material

First let me say that I know almost nothing but the basics about nuclear fission. I know more about nano robotics but I've got no degree in the matter, just a rather in depth curiosity and a lot of ...
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2answers
162 views

Implications of a scifi society's industry [closed]

If a space faring society has access to such resources, and technological capabilities that they are able to make alloys strong enough to build large, armored space vessels, extract gas from a gas ...
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3answers
91 views

Heavenly Host Daycare and Correctional Facility for misbehaving gods: Bahamut and Tiamat 1/2: Containment

Once upon a time there was a world called, "The Gone, but not Forgotten Realms", ran by #GamerGate Garry and #ClintonBodyCount Anon. One day, Anon got tired of Garry taking his work for granted and ...
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3answers
194 views

Is there an element or compound that is highly reactive to any component of milk?

I like to take inspiration for new fantasy creatures from my dreams, so I get some weird ideas sometimes. Last night I found this species. If milk gets on their skin, the creature looks as if it were ...
7
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3answers
607 views

Rare Earth Elements in the outer solar system

If a space station were to be built in the outer solar system, is there an asteroid beyond Jupiter with a ratio of rare earth elements high enough to make it worthwhile to mine for the rare earth ...