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: Some materials have negative heats of solution; the dissolution of one of these solutes in water is called?

Answer: Some materials have negative heats of solution; the dissolution of one of these solutes in water is called?


Question: Starches are complex carbohydrates that are the polymers of glucose.

Answer: What complex carbohydrates are the polymers of glucose?


Question: Carbon dioxide molecules consist of a central carbon atom bonded to two oxygen atoms.

Answer:
Carbon dioxide molecules consist of a central carbon atom bonded to how many oxygen atoms?