It depends on the solvent it was in. Phenolphthalein itself in small amounts won't hurt you - it's been used as a medicine, so you can consume some without dying. (Be warned: the medicine they use it in is laxative.)
It is dangerous because it can replace the oxygen in your lungs and it is odorless resulting in asphyxia. methane is a harmful gas that if inhaled, it can kill you. :-[
Exhaled air has less oxygen than inhaled air.Exhaled air has more carbon dioxide than inhaled air.Exhaled air is warmer that inhaled air.Maybe the first 2 are redundant, but I think that should work!
Alpha radiation can be stopped by pretty much anything: 5 cm of air, a piece of paper, skin, etc. Alpha particles are not dangerous unless inhaled, so skin is a safe solution.
Inhaled mercury vapor in small amounts, for adults, can have little or no effect at all. If too much is inhaled, this is absorbed through the lungs, allowing much of it to reach the brain.
The radioactivity of natural uranium is not so important. The external irradiation is very low. But the internal irradiation is dangerous: alpha radiations from inhaled uranium, radium and radon (Ra and Rn released by decay from U) can destroy pulmonary alveoli and cause lung cancers. Also the ingestion is dangerous because soluble salts of uranium are toxic.
0,1 mol phenolphthalein is 31,8333 g; it is impossible to inhale this amount.
Yes
yes very
Carbon monoxide
Carbon monoxide
alpha radiation
because that is the gas we release.
It is not unstable, used properly it is safe. But of course it is harmful if inhaled.
The crumbs float around and are dangerous if inhaled
Both are inorganic compounds, gases, dangerous to be inhaled.
Yes, mothballs contain naphthalene, which is a poison if inhaled.
Thorium can be dangerous, especially when powders are inhaled, because is a radioactive element.