Questions tagged [element]

For questions about the distribution and uses of specific chemical building blocks. This tag exists as a catch-all term for every unique element (hydrogen, helium, etc) for questions focused on one or two elements in particular. Compare to "chemistry" which details how elements interact in order to produce specific effects.

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6 votes
3 answers
1k views

How would an element behave that's a plasma at room temperature?

I'm considering a world where there's an element that has an element that's naturally a plasma. I'm wondering what the broad behavior of such an element would be. Would it be inherently unstable, ...
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1 vote
3 answers
134 views

A rocket powered by Francium(element 87)?

Francium is the most reactive of all alkali metals, in theory. It is so rare because its half-life is so short. But, using the Theory of Relativity, if you speed up the Francium in a particle ...
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7 votes
4 answers
713 views

Could neutron star mergers provide the necessary elements for complex life in the early universe?

I have been looking into the earliest possible time in the universe that a human-like intelligent species could evolve based on the necessary elements being present. Kepler-444 is one of the oldest ...
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25 votes
8 answers
4k views

A wizard develops transmutation -- but is it of any real use?

Edit: Everyone's ignoring the condition that the wizard needs to survive! This transmutation is to an object they're holding, it is not at a distance and any shielding is on the object and gets ...
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6 votes
4 answers
1k views

Alternate chemical elements?

I'm running into some issues trying to make sense of both my planet's density (it's given properties should make the planet an ocean world, so I'm looking for lighter elements so the planet is rocky) ...
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-4 votes
1 answer
144 views

What would my alloy (Marbelar) be made from?

Now, I have a fictional alloy called marbelar in my world, having a similar appearance to brass, featuring a reddish-gold appearance. It also has the highest stopping power out of any material in my ...
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5 votes
3 answers
213 views

Easiest to acquire solid element with high purity?

The goal is to create the Great Wall of China out of Titanium - which is to say you need a lot of material. Transmutation magic exists which can turn anything into a pure element (Titanium in this ...
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  • 51
4 votes
1 answer
167 views

How would a creature like this work?

This lifeform is a carbon based humanoid that uses ammonia instead of water, breathes chlorine gas, and its body uses the mineral olivine to toughen its skin. Its blood is blue; apparently an ammonia-...
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  • 2,393
-1 votes
1 answer
190 views

Elements found on Earth but not on Mars or the Moon [closed]

I am writing a sci-fi story. The availability of materials has big impact on the backstory: What elements can you find in extreme trace quantities on Earth, but not on the Moon? What elements can ...
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3 votes
3 answers
257 views

How much atmospheric nitrogen can we replace with other gasses without causing problems for human health? [duplicate]

I know we need nitrogen to live, but what happen if we reduce the proportion of nitrogen in air (replacing it with another substance)? What percentage can I replace without risking health of humans ...
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