Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
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Question: A(n) an ionic bond forms when the metal sodium gives up an electron to the nonmetal chlorine.

Answer: What forms when the metal sodium gives up an electron to the nonmetal chlorine?


Question: Surface tension is responsible for the fact that small insects can walk on water.

Answer: Surface tension is responsible for the fact that small insects can do this on water?


Question: Two many more legs do spiders have compared to insects.

Answer:
How many more legs do spiders have compared to insects?