Unit 4-Bonding

Question 1

Atoms ________ their potential energy by bonding.

Answer 1

decrease
forming bonds fills their outer shell, making them more stable.

Question 2

Types of intramolecular bonding

Answer 2

Ionic: electrons are transferred between atoms
Covalent: electrons are shared between atoms
Metallic: “sea” of electrons around atoms

Question 3

bond between metal+metal

Answer 3

metallic

Question 4

bond between nonmetal+nonmetal

Answer 4

covalent

Question 5

bond between metal+non metal

Answer 5

ionic

Question 6

Rank types of bonds strongest to weakest

Answer 6

covalent
ionic
metallic
intermolecular

Question 7

metallic bonding

Answer 7

the attraction between free floating electrons and positivly charged nuclei of metal atoms

Question 8

Ionic bonding

Answer 8

chemical bonding that results from electrical attraction between large numbers of cations and anions

Question 9

Ionic bonding occurs when the difference in electronegativity between two elements is

Answer 9

greater than 1.7

Question 10

Ionic compounds

Answer 10

composed of positive and negative ions that are combined so that the number of positive and negative charges are equal (overall neutral).

Question 11

binary compound

Answer 11

composed of 2 different elements

Question 12

molecule

Answer 12

neutral group of atoms held together by covalent bonds.

Question 13

Polar

Answer 13

unequal distribution of charge in a covalently bonded molecule

Question 14

to be polar the difference in electronegativity between the two atoms need to be

Answer 14

between >.5 and <1.7

Question 15

Bond length

Answer 15

the distance between two bonded atoms at their minimum potential energy

Question 16

Bond energy

Answer 16

the energy required to break a chemical cond

Question 17

which are stronger, intermolecular or intramolecular bonds?

Answer 17

Intramolecular

Question 18

types of intermolecular bonds

Answer 18

Dipole-Dipole, hydrogen, and London Dispersion

Question 19

do intermolecular forces include sharing of electrons?

Answer 19

No

Question 20

a molecules polarity depends on what 2 factors

Answer 20

The electronegativity of the atoms, and the molecular geometry

Question 21

Diploe-Dipole bonding

Answer 21

short range attractions between polar molecules

Question 22

How dose dipole-dipole bonding effect boiling point

Answer 22

it increases the boiling point of a substance

Question 23

Hydrogen bonds

Answer 23

when a hydrogen atom that is covalently bonded to a highly electronegative atom is attracted to an electronegative atom on a nearby molecule

Question 24

Dipole-induced Dipole

Answer 24

electrons in a nonpolar molecule respond to a nearby partial charge on a polar molecule

Question 25

London Dispersion Forces

Answer 25

attraction resulting from the constant motion of electrons and the creation of instantaneous dipoles
-the only molecular force that exists in nonpolar molecules and Nobel gases

Question 26

Rank the intermolecular forces from strongest to weakest

Answer 26

hydrogen bond
dipole-dipole
dipole-induced dipole
London dispersion