molecule test

Today we took a test based on molecules. Learning about molar masses and how to calculate the amount of moles, we were able to figure out how many atoms there were. A lewis structure is a representation of a molecule or polyatomic ion showing how valence elctrons are arranged among the atoms in the ion. A duet rule is surrounded by two electrons while an octet is surrounded by eight electrons. A bonding pair is a pair of electrons that are shared between two atoms forming a covalent or polar-covalent bond. A single bond is a covalent or polar covalent bond in which two pairs of electrons are shared by two atoms.