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放在水里的牙签,会随着放在水里的方糖游动,还是随着放在水里的肥皂游动?我们通过一个小实验来看结果吧。材料牙签清水方糖肥皂实验步骤1.把牙签小心地放在水面上。
The toothpicks placed in the water will move with the sugar in the water, or with the soap in the water? Let’s look at the results in a small experiment. Material Toothpick Liquid Sugar Soap Experimental Procedure 1. Carefully place the toothpick on the water.