What makes pop corn pop?

Question

Also, can you please tell me what is that white stuff of a pop corn? What is that made up of??I broke it while eating pop corn and it looked like some foam kinda thangy......

Hmm....I'm confused.....

Answer 1

Each kernel of popcorn contains a certain amount of moisture in its starchy endosperm. Unlike most other grains, the outer hull of the popcorn kernel is both strong and impervious to moisture, and the starch inside consists almost entirely of a hard, dense type.
As the kernel is heated past the boiling point, water in the kernel turns to superheated, pressurized steam, contained within the moisture-proof hull. Under these conditions, the starch inside the kernel gelatinizes, softening and becoming pliable. The pressure continues to increase until it reaches the breaking point of the hull. The hull ruptures rapidly, causing a sudden drop in pressure inside the kernel and a corresponding rapid expansion of the steam, which expands the starch and proteins of the endosperm into an airy foam. As the foam rapidly cools, the starch and protein polymers set into the familiar crispy puff.

Answer 2

The combination of the hot heat and hot oil makes the corn pop. that is corn but it puffs up like that when it gets hot.

Answer 3

Eddy's answer is thorough and correct. Please chose his answer as the best answer.

Thank You!

Answer 4

pop!