click below
click below
Normal Size Small Size show me how
3 Unit Bonding
Unit 3 Bonding Vocabulary
Term | Definition |
---|---|
ion | an atom that has lost or gained electron(s) and now has a charge because the protons and electrons are not in balance |
anion | a negative ion formed when an atom gains one or more electrons |
cation | a positive ion formed when an atom loses one or more electrons |
metal | elements on the periodic table located to the left of the zig zag line (except hydrogen) |
nonmetal | elements on the periodic table located to the right of the zig zag line (plus hydrogen) |
chemical bond | a force of attraction that holds two atoms together |
ionic bond | atoms held together by the charges formed when electrons are transferred |
covalent bond | atoms held together by electron sharing |
chemical formula | element symbols with subscripts that show how many of each type of atom is present |
ionic compund | typically a metal bonded to a nonmetal |
covalent (molecular) compound | typically a nonmetal bonded to a nonmetal |
electron dot (Lewis) diagram | a diagram that shows the element identity and valence electrons |
bonding pair | a pair of shared electrons located between two atoms |
lone pair | a pair of electrons that is not shared between atoms |
double bond | two pairs of shared electrons |
triple bond | three pairs of shared electrons |
polyatomic ion | a group of atoms that are covalently bonded together and act as a single unit |
molecule | two or more atoms held together by covalent bonds |
compound | two or more atoms held together by chemical bonds (can be either ionic or covalent) |
valence electrons | electrons that are located in the outermost shell and are involved in chemical bonding |