How to fix lightning breath?

[Anonymouswizard]

Actually, frost breath has always seemed one of the easier ones to me. There are real-life chemicals that react with each other in an extremely endothermic manner, so the dragon could just be exhaling one of those.

As should be obvious my my interactions in various threads, my knowledge of chemistry has regressed since I did my GCSEs.

[Bohandas]

Actually, frost breath has always seemed one of the easier ones to me. There are real-life chemicals that react with each other in an extremely endothermic manner, so the dragon could just be exhaling one of those.

In fact, the white dragon's breath weapon wouldn't actually need to be chemically different to just breathing out regularly at all; just mechanically different (like, physics mechanics, not game mechanics). All it would need is some specialized organ to store and compress and eventually decompress carbon dioxide; and the breath weapon would just be the equivalent of a CO₂ fire extinguisher; I understand that the gas leaves those kind of extinguishers at around -66 degrees celcius

http://surreyfire.co.uk/co2-fire-extinguishers/
http://safety.eas.ualberta.ca/?page_id=197