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Anonymous users2024-01-24A. Put a small spoonful of salt in a cup full of water, and some of the molecules of salt will be dispersed into the gap between the water molecules, so that the water surface does not change significantly, indicating that there is a gap between the molecules, not the effect of intermolecular gravity, so it is wrong; In line with the topic
B. The density of edible oil is less than the density of water, so it is correct that "oil flowers" float on the water; Off topic
C. The boiling point of water will increase with the increase of air pressure, the high air pressure in the pressure cooker, the high boiling point of water, and the high temperature will of course cook the rice quickly, which is correct; Off topic
D. Vinegar has a more obvious smell, and the vinegar molecules keep doing irregular movements, so when the cap is unscrewed, the vinegar smell will be tangy, which is correct and undesirable
So choose A
A. The pressure cooker has good sealing, which is the use of the characteristics of the liquid boiling point rising with the increase of air pressure above the liquid surface, which is correct and does not conform to the topic >>>More
The kitchen knife, the stir-fry spoon, and the pot handle all embody the principle of physical leverage, and the rice cooker and induction cooker embody the conversion of electricity and heat. >>>More
A. When stewing meat, the aroma is tangy, and the meat molecules are doing irregular movements, so we can smell it, and this option is correct; >>>More
First: The water turns when it flows into the basin, just like an object in a vortex goes to the middle. >>>More
The kitchen knife, the stir-fry spoon, and the pot handle all embody the principle of physical leverage, and the rice cooker and induction cooker embody the conversion of electricity and heat. >>>More