Question

How much energy is needed to pop a kernel of popcorn?

Answer 1

Hint: The energy that makes popcorn change from pieces to fleecy white puffs is thermal energy. The energy created by the development and attractions of the atoms inside a substance is called thermal energy. At the point when it is cooked, popcorn's warm energy increments. We sense this adjustment in thermal energy.

Complete answer:
Popcorn parts contain oil and water with starch, encircled by a hard and solid external covering. At the point when popcorn is warmed, the water inside the piece attempts to venture into steam, yet it can't escape through the seed coat (the popcorn body or pericarp). The hot oil and steam gelatinize the starch inside the popcorn portion, making it gentler and more malleable.
At the point when the popcorn arrives at a temperature of \[{180^ \circ }C\left( {356{\text{ }}F} \right)\] the weight inside the part is around \[135{\text{ }}psi\left( {930{\text{ }}kPa} \right)\]which adequate strain to crack the popcorn body, basically is turning the piece back to front. The weight inside the part is delivered rapidly, extending the proteins and starch inside the popcorn piece into a froth, which cools and sets into the natural popcorn puff. A popped bit of corn is around twenty to multiple times bigger than the first piece.

Note: Initially, popcorn was made by straightforwardly warming the pieces. Packs of microwave popcorn are somewhat unique in light of the fact that the energy comes from microwaves as opposed to infrared radiation. The energy from the microwaves makes the water particles in every bit move quicker, applying more tension on the structure until the piece detonates. The sack that microwave popcorn comes in aids traps the steam and dampness so the corn can pop more rapidly. Each pack is fixed with flavors so when a part pops, it strikes the side of the sack and gets covered. Some microwave popcorn presents a wellbeing hazard not experienced with standard popcorn because the flavorings are additionally influenced by the microwave and get into the air.