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Anonymous users2024-01-24A. When stewing meat, the fragrance is fragrant, and the meat molecules are doing irregular movements, so we can smell it, which is correct and does not meet the topic;
B. The boiling point of the oil is high, so it is easy to fry the dumplings, which is incorrect and in line with the topic;
C. The density of oil is smaller than that of water, so it floats on the water, which is correct and does not conform to the topic;
D. The knife edge is sharpened very sharply, in order to reduce the force area and increase the pressure, which is correct and does not conform to the topic;
Therefore, B dumplings are easy to be fried because the boiling point of the oil is high, and the specific heat capacity has nothing to do with it, so the answer is: B; Dumplings are easy to be fried because of the high boiling point of the oil, which has nothing to do with the specific heat capacity
3. Unscrew the cap of the vinegar bottle, the vinegar molecules are doing irregular movement, so we can smell it, the statement is correct, and it does not meet the topic; >>>More
There is no new substance generation in the juice squeezed by B, so it is a physical change, and there is a new substance generation in apple rotting and kitchen knife rusting, which is a chemical change, so B. is chosen
A. There are new substances such as carbon dioxide generated during the combustion process of liquefied gas, which belongs to chemical changes B. There are no new substances generated in the process of squeezing juice, which belongs to physical changes C. There are new substances generated in the process of bread mold, which belongs to chemical changes D. There are new substances in the process of kitchen knife rust generation, which belongs to chemical changes so choose B
A. Natural gas combustion produces water and carbon dioxide, which is a chemical change, so the choice is wrong; >>>More
A. The porcelain bowl is broken, and no new substances are generated, which is a chemical change, so the choice is correct; >>>More