Bonds And Intermolecular Forces

Question 0

Electron repulsion between the valence level electron pairs surrounding an atom causes these pairs to be oriented as far apart as possible.

Answer 0

VSPER

Question 1

A substance consisting of atoms by covalent bonds into a crystalline structure.

Answer 1

Network covalent substance

Question 2

A large crystal formed by network covalent structure.

Answer 2

Macromolecules

Question 3

The combining of atomic orbitals of similar energies on the same atom to provide special orbitals of equal energy for the purpose of bonding.

Answer 3

Hybridization

Question 4

A covalently bonded group of atoms with an overall positive or negative charge.

Answer 4

Polyatomic ion

Question 5

Intermolecular forces stronger than dipole-dipole forces.

Answer 5

Hydrogen bonds

Question 6

Collective name for all intermolecular forces.

Answer 6

Van der Waals force

Question 7

Any bonding situation that cannot be properly represent by a single Lewis structure.

Answer 7

Resonance

Question 8

Forces of attraction between dipoles of polar covalent molecules.

Answer 8

Dipole-dipole

Question 9

The intermolecular attractions resulting from electron motion and the creation of instantaneous, induced dipoles.

Answer 9

London dispersion forces

Question 10

Cloud delocalized mobile electrons.

Answer 10

Electron sea

Question 11

Bond between cations and anions.

Answer 11

Ionic bond

Question 12

Permanent change in shape.

Answer 12

Deformation

Question 13

Ionic character less than 5 percent (electronegativity difference less than 0.3).

Answer 13

Non polar covalent bond

Question 14

Bond between positive metal ion and mobile electrons.

Answer 14

Metallic bond

Question 15

Because of their ____________, network covalent substances are very hard and have high melting temperatures.

Answer 15

Crystalline structure

Question 16

____________ are large crystals formed by network covalent structures.

Answer 16

Macromolecules

Question 17

The __________ theory and I the __________ theory are two theories used to predict molecular shape.

Answer 17

VSPER; hybridization

Question 18

The geometric shape of a molecul is determined by the number of ________, the _________ pairs of electrons, and the ___________ of the atoms.

Answer 18

Atoms; unshared; partial charge

Question 19

According to the shape of the VSPER, the central atom is indicated with the letter ____, the number of atoms surrounding the central atom is indicated with the letter _____ and a subscript, and the number of unshared pairs of electrons is indicated by the letter _______.

Answer 19

A; B; E

Question 20

Most _________ compounds have crystalline structures consisting of small formula units that bond together to form the three-dimensional structure of the crystal.

Answer 20

Ionic

Question 21

Of these two types of bonds, covalent and ionic, the __________ is the stronger bond.

Answer 21

Ionic bond

Question 22

Metals are good conductors of electricity because the electric charge is transferred by the __________.

Answer 22

Mobile electrons

Question 23

Ionic character is determined by the difference between the ___________ of the two bonding elements.

Answer 23

Electronegativity

Question 24

Three types of intermolecular forces are __________ forces, ___________ bonds, and __________ dispersion forces.

Answer 24

Dipole-dipole; hydrogen; London

Question 25

The ________ bonds between water molecules account for the high heat of vaporization of water.

Answer 25

Hydrogen