Deck 4

Question 1

Electronegativity

Answer 1

Electronegativity is a measure of the attraction of a bonded atom for the pair of electrons in a covalent bond.

Question 2

Electronegativity

Answer 2

Electronegativity is a measure of the attraction of a bonded atom for the pair of electrons in a covalent bond.

Question 3

Electronegativity

Answer 3

Electronegativity is a measure of the attraction of a bonded atom for the pair of electrons in a covalent bond.

Question 4

Permanent dipole

Answer 4

A permanent dipole is a small charge difference across a bond that results from a difference across a bond that results from a difference in the electronegativies of the bonded atoms.

Question 5

Permanent dipole

Answer 5

A permanent dipole is a small charge difference across a bond that results from a difference across a bond that results from a difference in the electronegativies of the bonded atoms.

Question 6

Permanent dipole

Answer 6

A permanent dipole is a small charge difference across a bond resulting from a difference in electronegativities of the bonded atoms.

Question 7

A polar covalent bond

Answer 7

A polar covalent bond has a permanent dipole.

Question 8

An intermolecular force

Answer 8

An intermolecular force is an attractive force between neighbouring molecules. Intermolecular forces can be van der Waals’ forces, permanent dipole-dipole forces or hydrogen bonds.

Question 9

A permanent dipole-dipole force

Answer 9

A permanent dipole-dipole force is a weak attractive force between permanent dipoles in neighbouring polar molecules.

Question 10

Van der Waals’ forces

Answer 10

van der Waals’ forces are attractive forces between induced dipoles in neighbouring molecules.

Question 11

A hydrogen bond

Answer 11

A hydrogen bond is strong dipole-dipole attraction between:
- an electron-deficient hydrogen atom (O-H, N-H) on one molecule; and a lone pair of electrons on a highly electronegative atom (H-O or H-N) on a different molecule.

Question 12

Metallic bonding

Answer 12

Metallic bonding is the electrostatic attraction between positive metal ions and delocalised electrons.

Question 13

Delocalised electrons

Answer 13

Delocalised electrons are shared between more than two atoms.

Question 14

A giant metallic lattice

Answer 14

A giant metallic lattice is a three-dimensional structure of positive ions and delocalised electrons,bonded together by strong metallic bonds.

Question 15

A simple molecular lattice

Answer 15

A simple molecular lattice is a three-dimensional structure of molecules, bonded together by weak intermolecular forces.

Question 16

A giant covalent lattice

Answer 16

A giant covalent lattice is a three-dimensional structure of atoms, bonded together by strong covalent bonds.