Answer:
Endothermic:
- Dry Ice subliming.
- Condensing of H2O on the side of a glass.
- Input of heat energy
- Ice melting
Exothermic:
- Vaporizing a block of Iron
- Water freezing
- Deionizing argon ions
- Release of heat energy
- The other one about the soot being deposited on the walls inside a chimney, i think it's exothermic.
