Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

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

A: Some materials have negative heats of solution; the dissolution of one of these solutes in water is called?
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Q: You see a faster reaction rate when the concentration of reactants is higher.

A: What kind of reaction do you see when the concentration of reactants is higher?
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Q: Axillary buds in the axils of leaves and stems give rise to branches.

A:
What in the axils of leaves and stems give rise to branches?
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