Chapter 7 Chemistry Study Guide
Terms in this set (44)
the force that holds 2 atoms together
positively charged ion
a force that holds together atoms that are oppositely charged
compounds that contain ionic bonds
a 3-D geometric arrangement of particles in an ionic solid
an ionic compound whose aqueous solution conducts an electric current
the energy required to separate 1 mole of the ions of an ionic compound which is directly related to the side of the ions bonded and is also affected by the charge of the ions
the simplest ratio of the ions involved
1 atom ion; indicates the charges of common monatomic ions according to their location on the periodic table
the charge of a monatomic ion, equals the number of electrons transferred from the atom to the ion
ions made up of more than 1 atom
a polyatomic ion composed of an element, usually a nonmetal, bonded to 1 or more oxygen atoms
electron sea model
proposes that all the metal atom is a metallic solid contribute their valence electrons to form a "sea" of electrons
the electrons involved in metallic bonding that are free to move easily from one atom to the next throughout the metal & aren't attached to a particular atom
the attraction of a metallic cation for delocalized electrongs
a mixture of elements that has metallic properties
a family of elements that have very little tendency to react
when an element has the full 8 outer electrons -- making it stable & less reactive
pseudo-noble gas formations
the relatively stable electron structures developed by loss of electrons in certain elements of groups 3,4, 13 & 14
used to designate an anion
the overall charge of a formula unit for an ionic compound is ______
ionic compounds generally occur between____
metal & nonmetals
what is the relationship between lattice energy & the strength of the attractive force holding ions in place?
the more negative the lattice energy, the greater the force
the formation of a stable ionic compound from ions_____
may be either exothermic or endothermic
the crystal lattice of ionic compounds affects their ______ & _____ _______
melting & boiling points
what is lattice energy?
the energy required to separate the ions of an ionic compound
ions with larger charges produce a more _____ lattice energy than ions with smaller charges
the name for the ion with more oxygen atoms end with____
the name for the ion with fewer oxygen atoms end with_____
the order in the chemical formula for any ionic compound_______
the cation is written first, followed by the chemical symbol of the anion
what is the name of the model of metallic bonding?
electron sea model
why are the electrons in a metallic solid described as delocalized?
they aren't attached to 1 atom
which electrons from the metal make up the delocalized electrons?
the valence electrons
How can you tell if the metal atoms shown are cations or anions?
if there is a positive nucleus or not
How do the metallic ions differ from the ions that exist in ionic solids?
they aren't in rigid crystal lattice structure containing anions & cations -- not losing or gaining
Explain what holds the metal atoms together in the solid
the nuclei structure & constant movement of delocalized valence electrons
is a metal malleable? why?
yes; delocalized electrons make it easy to shift
is a metal brittle? why?
is a metal lustrous? why?
yes; they're shiny
do metals have high or low boiling points? why?
do metals have high or low melting points? why?
high melting point; strong
are metals ductile? why?
yes; delocalized electrons are easy to shift
are metals good or poor conductors of heat?
are metals good or poor conductors of electricity?
good; electrons move freely