It loses its water content and becomes brown.
When an onion is heated, the chemical reaction that occurs is caramelization. This reaction involves the breakdown of sugars in the onion due to heat, resulting in the browning and sweetening of the onion. Additionally, when onion is heated, sulfur compounds are released, giving it its distinct aroma and flavor.
Nothing. The onion will get wet.
no answer
It will evaporate.
it evaporates
it will melt
Lead dioxide decomposes upon getting heated.
so as to kill the cell
it gets hotter
it expands
it will shatter
if a reptile got over heated it would cook