A skillet is lined with a thin layer of cooking oil followed by un-popped popcorn kernels upon heating the all pop thereby escaping identify physical or chemical Chan?

* The popcorn kernels expand and pop due to the heat.

* The cooking oil changes from a liquid to a gas.

* The water inside the popcorn kernels turns into steam.

Chemical Changes

* The starch in the popcorn kernels breaks down into smaller molecules, including glucose.

* The glucose molecules react with oxygen to produce carbon dioxide gas.

* The carbon dioxide gas causes the popcorn kernels to expand and pop.