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Why do people cry when they cut onions?

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The human eye forms tears, when one is cutting onions, to dilute the acid formed when sulfenic acids in gaseous form react with the water in the eyes. Sulfenic acids are formed from amino acid sulfoxides.

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Stop being so stupidly smart!!
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It's sulphuric acid..
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haha! (zuleikhakk)...... :)
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Cutting an onion arouses a gas contained within the onion, propanethiol S-oxide, which then couples with the enzymes in the onion to emit a passive sulfur compound. When this upwardly mobile gas encounters the water produced by the tear ducts in our eyelids, it produces sulfuric acid.

In response to the caustic acid, our eyes automatically blink, and produce tears which irrigate the eye, and which flush out the sulfuric acid. find more in the link http://www.coolquiz.com/trivia/explain/docs/onion.asp
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Just cause!!

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that is half correct
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Its because of the gases of the onion that goes the closet place near water. Before answering questions you better know the answer.
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The strong smell from the acids in it

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Because of the acids

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Because onions contain sulphuric acid .It has a strong odour which makes our eyes burn.

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because of sulphuric acid.




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ho dt baby?
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because of the fumes that come out of the onion

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i'm going to agree with the acids !

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the onion has an oil that is very pungent smell and that smell affects the tear glands causing them to swell and tear up it is also used as a deterrent that is used as and called tear gas to control rioting crowds.it is also made up in thousands of chemicals not only just one.

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I have worked as chef all my life. Go figure you can get used to it. I can cut onions all day w/no problem But in basic I was exposed to CS gas and it wasn't that big of a deal. I have heard more ways to avoid this but my way is the only one that's'ever worked.
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I used to wonder the same thing until I walked by my mom cutting an onion it burns your eyes an makes you cry.

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Because the onion farts and the smell of the fart eats your insides in your nose and it goes "nom nom nom nom nom nom nom"! well there's your answer your welcome

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Katie1234321
haha!
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the onion is really strong and the smell gets in your eyes

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because its a very sad action

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The water of the onion gets in your eyes

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Onions have a Brain Stem, An Onion makes you Cry, Because an Onion Contains Sulfuric Acid, This Sulfuric Acid wants to Mix with Water so It Reacts to your Eyes, The Onions Cause Discomfort to the Eyes making them Water, The Chemicals In Onions get Airborne During the Cutting and Affect Our Eyes/Sinuses, When you Cut an onion, It Releases a Gas Called Propanethiol S- oxide, When Mixed with Certain Enzymes In the Onion, It Creates a Sulfur Gas, These Gases get to your Eyes and Create a Mild Acid which Irritates the Eyes .

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the cell of the onion are of two different types and when you cut them the chemicals combine to form hydrogendisulfide which them becomes airborne and combines with the water on the surface of your eye to form H2SO4 (sulfuric acid) very dilute. the tears are an attempt to raise the PH. different types of onions have varying tear forming capabilities, Vidalia onions grown with almost no sulfur in the soil very little tears, new york onions - the smallish white ones lots of tears but great for a liverwurst and onion sandwich. proper cutting can help check a cooking website.

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When you cut the onion. the acid comes out, and spreads out, and comes in contact with you sensitive eyes, your eyes start to water.

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the smell is to strong for the eyes

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Nope WRONG
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the acids/the smell

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bcuz the strong smell affects the eyes

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When you cut an onion, you break cells, releasing their contents. Amino acid sulfoxides form sulfenic acids. Enzymes that were kept separate now are free to mix with the sulfenic acids to produce propanethiol S-oxide, a volatile sulfur compound that wafts upward toward your eyes. This gas reacts with the water in your tears to form sulfuric acid. The sulfuric acid burns, stimulating your eyes to release more tears to wash the irritant away

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Didya know if you chew gum while cutting onions you WONT cry?

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the fumes and smell of the onion activate the tear glands forcing you to cry

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chemical reaction

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Because of the acids in it makes your eyes form water droplets. And you aren't crying... your eyes just water.

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i agree acids

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me three acids i never cry around onions

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people cry when they cut onions because the sulfurous gas reliced when cutting

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They release natural chemicals into the air when one is cutting onions.

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because its the saddest thing to cut an onion.........didnt you know?

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Because it's an aromatic that adds unique flavor and zest to most foods....try chewing gum the next time you chop an onion it works!

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i got nothing

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Because the sent will send a stinging feeling through your nose or mouth, wich leads to the nasel area, wich will cauSe your your eyes to tear up, it effects different poeple different ways

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It's a dramatic, life-changing experience that will change the way you look at an onion

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