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.

[Q]: Question: Electrons in the "outer shell" are also known as what kind of electrons? Answer: valence
[A]: Determine the total number of valence (outer shell) electrons. For cations, subtract one electron for each.

[Q]: Question: What are animal fats and oils such as olive and vegetable oil classified as? Answer: lipids
[A]: A: Lipids that are fats include butter and the fats in meats. Lipids that are oils include olive oil and vegetable oil. Examples of both types of lipids are pictured in the Figure below .

[Q]: Question: Electrons are organized into shells and subshells about the nucleus of this? Answer: atom
[A]:
Electrons are organized into shells and subshells about the nucleus of an atom.