Possible Questions:
- Gather on a surface
- Accumulate on a surface
- Gather on the surface, chemically
- Gather on a surface, in chemistry
- Condense on a surface
- Gather on a surface, chemically
- Condense, in a way
- Condense on a surface, chemically
- Accumulate on the surface, like molecules
- Accumulate gases on the surface
- What charcoal does
- Stick to a surface
- Gather in a thin layer of molecules
- Gather in a condensed layer
- Gather chemically in a thin layer
- Collect on a surface, as a gas
- Collect on a surface
- Collect liquid in condensed form
- Collect in condensed form, as gases
- Collect in condensed form
- Collect condensed gas on a surface
- Act on like a carbon filter
- Accumulate, chemically
- Accumulate on a surface, as a dissolved substance