Given a scientific passage and an answer, generate a question for the given answer.

Passage: Oxygen has the second highest electronegativity of any element; consequently, it prefers to share or accept electrons from other elements. Only with fluorine does oxygen form compounds in positive oxidation states. Answer: positive oxidation states
Oxygen has the second highest electronegativity of any element; consequently, it prefers to share or accept electrons from other elements. only with fluorine does oxygen form compounds in this?

Passage: Any magnet has two ends called poles where the magnetic effect is strongest. Answer: poles
What do you call the two ends of a magnet where the magnetic effect is strongest?

Passage: Saturated hydrocarbons contain only single bonds between carbon atoms. They are also called alkanes. They may form straight-chain, branched-chain, or cyclic molecules. Compounds with the same number of atoms but different shapes are called isomers. Answer: alkanes
What is another word for saturated hydrocarbons?