Mystery liquid revealed here http://www.stevespanglerscience.com/experiment/sink-or-swim-surface-tension
There are times in science where changing one variable can be the difference between fire and smoke, conducting and insulating, and in this case, sinking and swimming. In the Sink or Swim experiment, you’ll learn how adding one variable to water will change the amount of surface tension the water has. You’ll see that anything you add to water can quickly affect whether something sinks or swims.
Want more experiments like this? Check out http://www.stevespanglerscience.com/product/naked-eggs-and-flying-potatoes
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