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

[Q]: Passage: When a fluorine atom gains an electron, it becomes a negative fluoride ion. Answer: fluoride ion
[A]: When a fluorine atom gains an electron, it becomes a negative what?

[Q]: Passage: Although lots of symbiotic relationships help both organisms, sometimes one of the organisms is harmed. When that happens, the organism that benefits, and is not harmed, is called a parasite . This type of relationship is known as parasitism. Answer: parasite
[A]: Although lots of symbiotic relationships help both organisms, sometimes one of the organisms is harmed. when that happens, the organism that benefits, and is not harmed, is called a what?

[Q]: Passage: The Sun is made mostly of plasma. Plasma is superheated gas with a positive electrical charge. Answer: plasma
[A]:
What is defined as superheated gas with a positive electrical charge?