A Skillet Is Lined with a Thin Layer of Cooking

Multiple Choice

A skillet is lined with a thin layer of cooking oil followed by a layer of unpopped popcorn kernels.Upon heating the kernels all pop thereby escaping the skillet.Which of the following physical and/or chemical changes occurred?

A) The water within each kernel is heated to the point that it would turn into water vapor as the kernels popped (physical change) .
B) The starches within the kernels are cooked by the high temperatures (chemical change) .
C) Both A and B occur.
D) Physical and chemical changes cannot occur without a real chemical reaction taking place.