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Anonymous users2024-01-24(1) We now commonly use coal gas, liquefied petroleum gas, and natural gas for cooking; The main component of natural gas is methane, so the answer is: CH4
2) According to the conditions of combustible combustion, it can be known that the oil in the pot can be extinguished with a lid after the fire is ignited during frying, and the principle is to isolate the oil from the air (oxygen); Therefore, the answer is: use the lid of the pot to extinguish; Isolation of air (oxygen);
3) Activated carbon can adsorb pigments, peculiar smells, etc., and can decolor brown sugar into white sugar; So the answer is: adsorption
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(1) A Eggs mainly contain protein;
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