In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

[Q]: Question: What kind of reaction adds water to an organic molecule and breaks the large molecule into smaller molecules? Answer: hydration reaction
[A]: Hydration reaction kind of reaction adds water to an organic molecule and breaks the large molecule into smaller molecules.


[Q]: Question: What might a scientist do to confirm the work of another? Answer: replicate their work
[A]: To confirm the work of another scientist, a scientist might replicate their work.


[Q]: Question: What  occur when elements switch places in compounds? Answer: replacement reactions
[A]:
Replacement reactions  occur when elements switch places in compounds.