Why air is blended in ice cream

Air is blended in ice cream to give it l) air is often blended into icecream to give it a lighter texture

b) when popping corn is heated water inside the kernels becomes gas and expands. this creates enough gas to explode the kernel.

c) a loud pop is heard with a lit match is placed at the mouth of a testtube holding hydrogen gas

d) ethanol is used as an alternative source of energy to power cars.

e) some silver rings leave a green stain on your finger.