'The difference between HCN and HCl (L) ... is only two letters' ... close enough..
{{dark--swirly--mist}} back in chem class/experiment day: [all true]
Looking at usual oxygen generator, KClO3 + catalyst.. (Potassium Chlorate)
Guy has it in an ignition tube (heavy-test-tube); I see little white POP!!s on surface, as he heats.
I say, semi-jocularly--only "semi-"--"Better watch it; that looks ready to expl______"
**BOOM**
.
.
.
Blood, from mouth; guy freaking out.. lead him to infirmary--some glass cut a gum! Not gonna Die.
NO safety goggles (either of us) ...
Glass all over; I got not a scratch.
Turns out that the stockroom guy had given him KClO4 (Potassium Perchlorate!)
--which isn't a great Oxygen generator; it generates it, of course but ... All-At-Once.
Lucky, Lucky -- just like those folks drinking this Unknown-crap still strong enough to smell..
Unless it should turn out that ... they are Unlucky?
THIS.. in 2014, What we are getting is: !=smarter. And it shows every day.