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.

Filter by
Sorted by
Tagged with
5
votes
4answers
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) ...
-4
votes
1answer
123 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 ...
5
votes
3answers
193 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 ...
4
votes
1answer
130 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-...
-1
votes
1answer
107 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 ...
3
votes
3answers
160 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 ...