Thiols , organic molecules that contain the -SH group.
Onion
Pungent food is sharp, biting or acrid. Examples of pungent foods are: Bhut Jolokia chili pepper, garlic, clove,pepper ginger mustards , horseradish , wasabi , onion, etc..
It would be a physical change because it is not changing the chemical composition.
Ammonia is a pungent colorless liquid. Acetone is a colourless, pungent and volatile liquid. Benzene is a colourless, pungent and volatile liquid.Chloroform is a colourless, pungent and volatile liquid. Diethyl Ether is a colourless, pungent and volatile liquid. Hydrogen Cyanide is a colourless, pungent and volatile liquid. Toluene is a colourless, pungent and volatile liquid.See the Web Links to the left for more information about ammonia, acetone, benzene, chloroform, diethyl ether, hydrogen cyanide andtoluene.
Ammonium Carbonate decomposes to yield Water(H2O), Carbon Dioxide(CO2), and Ammonium(NH4).
Garlic and Onion are examples of pungent vegetables.
Onion
Pungent
Pungent is not a thing. It is an adjective that describes the way something smells. A strong smell. The pungent smell of onion, garlic and wet dog filled the room.
Due to the pungent odor of the chemical, the classroom was cleared.
'propene sulphilin' is the chemical substance present in the onion which makes you to cry when you cut onion.
Physical
physical
Pungent food is sharp, biting or acrid. Examples of pungent foods are: Bhut Jolokia chili pepper, garlic, clove,pepper ginger mustards , horseradish , wasabi , onion, etc..
It would be a physical change because it is not changing the chemical composition.
That spice has a very pungent odor, but it makes the soup quite delicious. The smell in the backyard was so pungent that we suspected to find a dead animal somewhere.
=== === Yes, the onion can kill the cockcroach because they contain a sulfur-rich volatile oil, peeling or slicing them can cause a person's eyes to tear. This onion has concentric leaf bases having a pungent odor and taste.