Q: All elements are most stable when their outermost shell is filled with electrons according to which rule? Choices: - quartet rule - string rule - coupling rule - octet rule A:
octet rule

Q: As with other organic compounds that form hydrogen bonds, water solubility of amines is reflected in the length of what? Choices: - hydrocarbon bonds - complex carbohydrates - nuclei chains - carbon chains A:
carbon chains

Q: Varves form in lakes covered by what? Choices: - coral reef - bridges - soot - ice A:
ice