Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.

Example Input: Question: What composition determines both eruption type and volcano type? Answer: magma
Example Output: Magma composition determines both eruption type and volcano type.

Example Input: Question: What do you call the electrons in the outermost energy level of an atom? Answer: valence electrons
Example Output: Electrons in the outermost energy level of an atom are called valence electrons. They determine many of the properties of an atom, including how reactive it is.

Example Input: Question: What are formed by atoms gaining electrons? Answer: anions
Example Output:
Figure 7.10 Cations are formed when atoms lose electrons, represented by fewer Lewis dots, whereas anions are formed by atoms gaining electrons. The total number of electrons does not change.