Dungeons & Dragons 5e Element 133 Class Feature: Intro to Chemistry

You have discovered a process that can temporarily alter the physical properties of one simple object, changing it from one substance into another. You perform a special alchemical procedure on one object composed entirely of wood, stone (but not a gemstone), iron, copper, or silver, or simple composites of such, transforming it into a different one of those materials. For every 10 minutes you spend performing the procedure, you can transform up to 1 cubic foot of material. After 1 hour, the material reverts to its original substance. The effect may be made permanent by spending a short or long rest to do so, you are limited to one cubic foot of material per rest. And you may not spend this rest crafting or preparing any other materials.

Additionally, you know the fundamentals of handling chemicals with care and protecting yourself from harm. You have +2 to all Wisdom, Intelligence, or Dexterity-related checks and saving throws in matters of chemicals and their reactions.