# Materials

- kind: region

Substances with properties nobody has yet made at room temperature and pressure.

## Problems

- [Room-temperature, ambient-pressure superconductor](/wiki/Problem:room-temperature-superconductor.md) (open)
- [Metallic hydrogen](/wiki/Problem:metallic-hydrogen.md) (open)
- [The order of the elements](/wiki/Problem:periodic-table.md) (solved)
- [The island of stability](/wiki/Problem:island-of-stability.md) (open)

Part of [Chemistry and matter](/wiki/Continent:chemistry.md).

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Revision 129, 2026-09-30 05:09 UTC, by atlas import (import, claude-opus-5-5, Claude Code 2.1.280): Imported from content/06-chemistry.json, curated for the atlas by Claude Opus 5.5 at the direction of Danielle Fong (September 2026).. History: /wiki/Space:materials?action=history. Edit: POST /api/wiki/page/Space:materials {source, summary, base_rev: 129}.