Question

We say that cooking is also a chemical reaction.so when we cook something we provide heat.and when food is ready it produces heat.

Which type of reaction is this

Chemical or physical?????

Answer 1

To understand why cooking is a chemical change, you should first understand what is a chemical change. Basically, all changes in this world can be classified as either physical changes or chemical changes. The difference is that chemical changes bring about new substances while physical changes don’t. Take the example of baking: when you bake a cake, the most immediately observable change is that it expands. This is because the baking soda in it has undergone a chemical change under heat to release carbon dioxide. Notice there is no carbon dioxide in the cake before we bake it. That is what I mean by bringing about new substances.
So why is cooking a chemical change? Because almost all cooking methods involving the rise of temperature (which is basically to say, all cooking methods) involve chemical changes. Once under heat, the antioxidants omnipresent in vegetables will get oxidized and the proteins in meats will get denatured. Among other things, the former process will mostly result in the change of color of the vegetables, and the latter the stiffening of the meats


When cooking and baking several chemical reactions occur under heat. From simple denaturation of proteins (eg. when you boil an egg) to more complex reactions (eg. going from raw dough to cooked bread) .