In this task, you are given a sentence and a question, you would be asked to create the answer which is contained in the sentence provided.

Q: Sentence: The term half-life decribes the amount of time required for half of the original material to decay in an isotope. Question: What term decribes the amount of time required for half of the original material to decay in an isotope?

A: half-life
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Q: Sentence: For an exothermic chemical reaction, energy is given off as reactants are converted to products. Question: For an exothermic chemical reaction, energy is given off as reactants are converted to what?

A: products
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Q: Sentence: Fractional crystallization is the separation of compounds on the basis of their solubilities in a given solvent. Question: What is the separation of compounds on the basis of their solubilities in a given solvent?

A:
fractional crystallization
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