June 27 is #NationalOnionDay. Here's a look at an onion's eye-watering chemistry! https://wp.me/p4aPLT-31
The eye-watering chemistry of an onion

Click to enlarge The latest in the series of food chemistry graphics looks at the chemistry of onions - specifically, what causes their odour, and why chopping onions will make your eyes water. Interestingly, none of the compounds that cause...

Compound Interest
@compoundchem (reads formulas)
(sees a bunch of ones with oxygen smushed up against sulfur)
(eyes start watering just *looking* at that)