Given a scientific passage and an answer, generate a question for the given answer.
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Question: Passage: If the experimental value is less than the accepted value, the error is negative. If the experimental value is larger than the accepted value, the error is positive. Often, error is reported as the absolute value of the difference in order to avoid the confusion of a negative error. The percent error is the absolute value of the error divided by the accepted value and multiplied by 100%. Answer: negative

Answer: If the experimental value is less than the accepted value, the error is what?

Question: Passage: Solutes change the physical properties of solvents. They lower the freezing point and raise the boiling point of solvents. Answer: solutes

Answer: What change the physical properties of solvents?

Question: Passage: Ethers are good solvents for other organic compounds because of their low reactivity. They readily dissolve non-polar molecules. Diethyl ether is perhaps the best known ether. It is widely used as a solvent and has been used as an inhalable anesthetic. Answer: non-polar

Answer:
Ethers readily dissolve what type of molecules?