Virginia Tech Chem 1035 Exam 4 Test
Questions And Answers.
bonding is a result of... - Answer atoms interacting with valence electrons
for elements in group 1A-8A the group number = - Answer the number of valence electrons
how to draw a lewis electron-dot diagram - Answer 1. note the A-group number, this tells the
valence electrons
2. place one dot at a time on each of the four sides of the element symbol
3. keep adding dots, pairing them until all are used
bond between a metal and non-metal - Answer ionic bonds
bond where electrons are transferred - Answer ionic bonds
bond that oppositely charged ions are held together by electrostatic interactions - Answer
ionic bonds
type of bond that each atom forms an ion with a noble gas configuration - Answer ionic bonds
bond between two metals - Answer metallic bonds
forms a "sea" of electrons from atoms pooling their valence electrons together - Answer
metallic bonds
bond between two nonmetals - Answer covalent bonds
electron sharing - Answer covalent bonds
number of electrons lost by metal = - Answer number of electrons gained by nonmetal
, 4. make sure to write the charge on each atom
lattice energy - Answer the energy required to cleave an ionic solid into gaseous ions or the
energy released when oppositely charged ions come together
higher lattice energy have ________ ionic bonds holding ions ________ together - Answer
stronger; tightly
high lattice energy have very ______ material and ________ melting point - Answer hard; high
lattice energy is ________ proportional to q, the charge of ions (the absolute value of the
charge) - Answer directly
lattice energy is _______ proportional to r, the size or radius of ion - Answer inversely
which is more influential on lattice energy, charge or radius of an ion? - Answer charge
Lattice energy proportion equation - Answer LE = (q1 x q2)/(r1 + r2)
compound that tend to be hard, rigid, and brittle - Answer ionic compounds
compounds that tend to have a high melting point - Answer ionic compounds
compound that does not conduct electricity in a solid state but will conduct when melted or
dissovled - Answer ionic compounds
in a solid state this type of compound has ions that are fixed in place in the lattice and do not
move - Answer ionic compounds
lone/unshared pair of electrons definition - Answer outer-level electron pair that is not
involved in bonding
octet rule - Answer atoms (other than hydrogen) tend to form bonds to achieve 8 outer
Questions And Answers.
bonding is a result of... - Answer atoms interacting with valence electrons
for elements in group 1A-8A the group number = - Answer the number of valence electrons
how to draw a lewis electron-dot diagram - Answer 1. note the A-group number, this tells the
valence electrons
2. place one dot at a time on each of the four sides of the element symbol
3. keep adding dots, pairing them until all are used
bond between a metal and non-metal - Answer ionic bonds
bond where electrons are transferred - Answer ionic bonds
bond that oppositely charged ions are held together by electrostatic interactions - Answer
ionic bonds
type of bond that each atom forms an ion with a noble gas configuration - Answer ionic bonds
bond between two metals - Answer metallic bonds
forms a "sea" of electrons from atoms pooling their valence electrons together - Answer
metallic bonds
bond between two nonmetals - Answer covalent bonds
electron sharing - Answer covalent bonds
number of electrons lost by metal = - Answer number of electrons gained by nonmetal
, 4. make sure to write the charge on each atom
lattice energy - Answer the energy required to cleave an ionic solid into gaseous ions or the
energy released when oppositely charged ions come together
higher lattice energy have ________ ionic bonds holding ions ________ together - Answer
stronger; tightly
high lattice energy have very ______ material and ________ melting point - Answer hard; high
lattice energy is ________ proportional to q, the charge of ions (the absolute value of the
charge) - Answer directly
lattice energy is _______ proportional to r, the size or radius of ion - Answer inversely
which is more influential on lattice energy, charge or radius of an ion? - Answer charge
Lattice energy proportion equation - Answer LE = (q1 x q2)/(r1 + r2)
compound that tend to be hard, rigid, and brittle - Answer ionic compounds
compounds that tend to have a high melting point - Answer ionic compounds
compound that does not conduct electricity in a solid state but will conduct when melted or
dissovled - Answer ionic compounds
in a solid state this type of compound has ions that are fixed in place in the lattice and do not
move - Answer ionic compounds
lone/unshared pair of electrons definition - Answer outer-level electron pair that is not
involved in bonding
octet rule - Answer atoms (other than hydrogen) tend to form bonds to achieve 8 outer
