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

Example Input: Stirring, surface area, and temperature affect the rate at solute dissolves what occurs.
Example Output: Stirring, surface area, and temperature affect the rate at which what occurs?

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

Example Input: You call elements that contain only atoms of one type of element native elements.
Example Output:
What do you call elements that contain only atoms of one type of element?