Loading presentation...

Present Remotely

Send the link below via email or IM


Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.


Make your likes visible on Facebook?

Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.

No, thanks

Under what conditions do onions make you cry the least?

No description

karla lerma

on 27 May 2014

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Under what conditions do onions make you cry the least?

Under what conditions do onions make you cry the least?
if i cut an onion and put it in different conditions (whole,frozen or put in water) then the frozen onion would make me cry the last
Independent Variable (
what will change
): The condition of the onion.
whole,frozen and in water

Dependent Variable (
what i will measure
): How much it will make me cry.
rating 1-5
1.Get an onion, a knife, a bowl, water,and a timer.
2.Chop-up the onion into 3.
3.Fill up the bowl halfway with water.
4.Put one of the pieces in the freezer and the second piece in the watter.leave the tiered onion piece by it self.
5.Set the timer to 15 minutes.
6.When the timer is over, get the pieces of onions and chop them up see which one makes you cry the most (side note: i cry very easily when chopping onions).
7. Wright your results.

1 Onion
For the whole onion it made me cry pretty hard my eyes were irritated i gave it a 4 out of 5. The onion put in water made me cry more the the whole onion i guess the syn-propanethial-S-oxide which is the gas that the onion makes wen chopped up got mixed with the water molecules and made me cry a bit more then the whole so i gave it a 4.5 out of 5.The frozen onion mad me cry way less it just ahd a very strong smell,so i gave it a 1 out of 5.
my hypothesis was right ,the frozen onion made me cry less then the rest.the one that made me cry the most was the onion put in whater.my questions that wasn't answered by non of the articles i read was why did the frozen onion make me cry the less?. I think one thing that could have affected my data or analysis could had been that i did my testes one after another.The answer to my question is the frozen onion made me cry the least out of the rest. One of my conclusions is that the reason the whole onion made me cry was because it was plain it was just as chopping a normal onion and the syn-propanethial-S-oxide gas that came up irritated my eyes and that's why they would cry. My second conclusion was that the frozen onion did something to one of the compounds in the onion to reduce the tendency. My results could be used in the real world to stop from crying when cooking with onions.
why onions make you cry begins in the ground.onions are a vegetable that belong to the plant allium along with 400 veriations.serlerf in the Earth is absorbed in the vegetable to form amino acids sulfoxides. sulfoxieds that naturally turn into a gas.wen you cut into an onion you break lots of individual onions cells.this cells have special enzymes as well as sulfanic acid which make syn-propanethial-S-oxide.the syn-propanethial-S-oxide is a type of gas that the onion makes when chopped. the front surface of your eyes has special sense nerves to protect you your eye balls sending a signal to your nerves system which you feel as a burning sencetin the nuves systome realises tear to make the burning go away
I could of not given my eyes enough rest, and that could have effected the way my eyes reacted to it.
Did one test after another ,could of affected my resestance to the syn-propanethial-S-oxide gas.
Rampalli, S. V. M., Gudepu, R., Rabbani, M., & Janapathi, Y. K. (2013). Sedative and hypnotic activity of bulbs of Allium cepa Linn. International Journal of Pharmaceutical Sciences and Research, 4(12), 4650+. Retrieved from http://go.galegroup.com/ps/i.do?id=GALE%7CA360358626&v=2.1&u=nm_p_newmex&it=r&p=GPS&sw=w&asid=f5e187542c82bb699df50377442be6aa
Nissar, A. U., Farrukh, M. R., Kaiser, P. J., Rafiq, R. A., Afnan, Q., Bhushan, S., ...Tasduq, S. A. (2013). Effect of N-acetyl cysteine (NAC), an organosulfur compound from Allium plants, on experimentally induced hepatic prefibrogenic events in wistar rat. Phytomedicine: International Journal of Phytotherapy & Phytopharmacology, 20(10), 828+. Retrieved from http://go.galegroup.com/ps/i.do?id=GALE%7CA341938736&v=2.1&u=nm_p_newmex&it=r&p=GPS&sw=w&asid=3257618091c9688cb22e62d696753dc4
BytesizeScience. "Why Do Onions Make You Cry?" YouTube. YouTube, n.d. Web. 26 May 2014.
find out why onions have such a strong sense.
find out why it has such a bitter tast
can put the onion through more conditions
try this with different types of onions
Under what conditions do onions make you cry the least?
Karla Lerma
Full transcript