Question

Burning of oil I'd a chemical change. why?​

Answer 1

Answer:

After burning oil you are destroying is contents or I should say transferring them into the food you are making.

After cooking food you notice that there will be very small amounts of oil particles in it.

When you see your food you cannot separate the particles of oil by any PHYSICAL means.

Answer 2

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Burning of oil is a chemical change beacause of the following reasons :-

• It includes changes in the chemical composition of oil.
• It causes the oil to overheat and form a new substance.
• On overburning, it can even turn ash - blackish and will have a complete change from the original substance.

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More examples of chemical changes :-

1. Change of egg into Omellete.
2. Cooking of food.
3. Burning of gas.
4. Burning of a paper.
5. Breaking of an egg.
6. Rusting of iron.
7. Souring of milk.
8. Converting milk to curd.
9. Baking a pizza.
10. Digestion of food.