Burning toast is it physical change or chemical change?
Cooking frequently involves inducing chemical changes in the food.
Because it's burning, and burning is a chemical reaction. In actuality, we carbonize or partially carbonize the starch molecules in the bread when we create toast. As the water evaporates, the starches degrade into sugars, which caramelize and turn brown. Which of the following does not constitute a physical change? Leaving a piece of toast in the toaster until it is totally defrosted by accident.Burnt toast, in my opinion, is an example of a chemical shift. If you're being picky, "leaving" the toast somewhere is a physical change, whereas burning it is a chemical change. This is also true for any food that is cooked - when done properly and with skill, the chemical changes look, smell and taste agreeable to our senses.
7. Burning woods change to ashes. Turning into change, physical change)
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