2.4 The three types of chemical bonds are ionic, covalent, and hydrogen.
ion
A charged atom
covalent bond
A chemical bond that involves sharing a pair of electrons between atoms in a molecule
polar molecule
A molecule that has electrically charged areas. (ex. water)
anion
A negatively charged ion
cation
A positively charged ion
electron shells
An energy level representing the distance of an electron from the nucleus of an atom.
nonpolar molecules
Electrically balanced molecules.
ionic bond
Formed when one or more electrons are transferred from one atom to another
octet rule (or rule of eights)
The tendency of atoms to interact in such a way that they have eight electrons in their valence shell.
dipole
a molecule that has two poles, or regions, with opposite charges (like water)
electropositive
atoms with less electron-attracting ability
electronegativity
electron-hungry , attract electrons very strongly
crystals
large arrays of cations and anions held together by ionic bonds
valence shell
outermost electron shell
chemical bonds
the attractive forces that hold atoms together
energy level
the specific amount of energy an electron has (used interchangeably with "electron shell")