Chemistry Chapter 7 Study Guide – Flashcards
Unlock all answers in this set
Unlock answersquestion
chemical bond
answer
the force that holds two atoms together; may form by the attraction of a positive ion for a negative ion or by sharing electrons
question
cation
answer
an ion that has a positive charge
question
anion
answer
an ion that has a negative charge
question
ionic bond
answer
the electrostatic force that holds oppositely charged particles together in an ionic compound
question
ionic compound
answer
a compound that contains ionic bonds
question
crystal lattice
answer
a three-dimensional geometric arrangement of particles in which each positive ion is surrounded by negative ions and each negative ion is surrounded by positive ions; vary in shape due to sizes and relative numbers of the ions bonded
question
electrolyte
answer
an ionic compound whose aqueous solution conducts an electric current
question
lattice energy
answer
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 affected by the charge of the ions
question
formula unit
answer
the simplest ratio of ions represented in an ion compound
question
monatomic ion
answer
an ion formed from only one atom
question
polyatomic ion
answer
an ion made up of two or more atoms bonded together that acts as a single unit with a net charge
question
oxyanion
answer
a polyatomic ion composed of an element, usually a nonmetal, bonded to one or more oxygen ions
question
electron sea model
answer
proposes that all metal atoms in a metallic solid contribute their valence electrons to form a 'sea' of electrons, and can explain properties of metallic solids such as malleability, conduction, and ductility
question
metallic bond
answer
the attraction of a metallic cation for delocalized electrons
question
alloy
answer
a mixture of elements that has metallic properties; most commonly forms when the elements are either similar in size (substitutional alloy) or the atoms on one element are much smaller than the atoms of the other (interstitial alloy)
