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Chemical - a physical change can be reversed , e.g Freezing water, melting chocolate.
But something like popping corn is ireversible like baking a cake or boiling a egg.
Hope this helps.
Wiki User
∙ 12y ago
Wiki User
∙ 14y ago99% of making popcorn is a physical change -- you're flashing liquid water in the kernel into steam; not chemical in that you're changing the shaps of the corn but not the composition. The exceptions are that a tiny amount of protein may be denatured, and if you burn it you're into chem change city.
Wiki User
∙ 13y agoits a chemical change because its popping and its in the heat
Wiki User
∙ 13y agoPhysical change, mostly. The starch isn't converted into anything else but the heat does change the chemical structure somewhat.
Wiki User
∙ 8y agoNo, because i think its a physical change and thats because nothing is being addded or melting just a form of changing the cornballs. The way it appears is different.
Wiki User
∙ 8y agoIt's a physical change.. The popped corn is still corn - the heat from the pan simply made the kernels expand so they burst out of their seed cases.
Wiki User
∙ 14y agoPhysics, not chemistry. PV=nRT
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