I'm Going to answer this thread once and for ALL Corn is grain and its in the bacon family because corn is just as good has bacon so there I answer is thread
A popcorn kernel is actually a seed. Like other seeds, inside it has a tiny plant embryo (a life form in its earliest phase). The embryo is surrounded by soft, starchy material that would give the embryo energy for growing into a plant. A hard, glossy shell protects the outside of the seed.
The soft, starchy material holds some water. When the kernel is heated to a high heat (400 degrees F), the water inside the kernel turns into steam. The pressure from the steam causes the kernel to explode. The soft starch inside bursts out at about 40 times its original size, turning the kernel inside out. This creates the fluffy white area of a popped kernel.
Corn is used as a vegetable, but it is actually a grain.