chemistry ch 7 vocabulary Flashcards
the force that holds two atoms together; may form by the attraction of a positive ion for a negative ion or by sharing electrons
chemical bond
an ion that has a positive charge
cation
an ion that has a negative charge
anion
the electrostatic force that holds oppositely charged particles together in an ionic compound
ionic bond
compounds that contain ionic bonds
ionic compound
a three-dimensional geometric arrangement of particles in which each positive ion is surrounded by negative ion and each negative ion is surrounded by positive ions; vary in shape due to sizes and relative numbers of the ions bonded
crystal lattice
an ionic compound whose aqueous solution conducts an electric current
electrolyte
the energy required to separate one mole of the ions of an ionic compound, which is directly related to the size of the ions bonded and is also affected by the charge of the ions
lattice energy
the simplest ratio of ions represented in an ionic compound
formula unit
an ion formed from only one atom
monatomic ion
an ion made up of two or more atoms bonded together that act as a single unit with a net charge
polyatomic atom
a polyatomic ion compound of an element usally a nonmetal bonded to one or more oxygen atoms
oxyanion
proposes that all metal atoms in metallic solid contribute their valence electrons to form a sea of electrons and can explain properties of metallic solid such as malleability, conduction and ductility
electron sea model
the electrons involved in metallic bonding that are free to move easily from one atom the next throughout the metal and are not attached to a particular atom
delocalized electron
the attraction of a metallic cation for delocalized
metallic bond
