Unit 11

Question 1

An attractive force that forms between particles in the liquid and solid phases

Answer 1

intermolecular forces

Question 2

Forces between neutral molecules

Answer 2

Van der waals forces

Question 3

What do intermolecular forces influence?

Answer 3

melting/boiling point
vapor pressure
conductivity

Question 4

Forces that exist within a molecule

Answer 4

Intramolecular forces

Question 5

What do intramolecular forces influence?

Answer 5

Molecular shape
Bond energies
Chemical behavior

Question 6

Hydrogen bonds are what kind of intramolecular force?

Answer 6

dipole-dipole

Question 7

The temporary attraction between ions and a polar molecule, important in the formation of solutions

Answer 7

Ion-dipole interactions

Question 8

What is the strongest of the intermolecular forces?

Answer 8

ion-dipole

Question 9

The temporary attraction between polar molecules

Answer 9

Dipole-dipole

Question 10

The unusually strong dipole-dipole attraction formed between partially positive hydrogen atoms and a highly electronegative atom (F, O, or N) with a lone pair of electrons

Answer 10

Hydrogen bonds

Question 11

What is required to create hydrogen bonds?

Answer 11

Positive hydrogen atoms and F, O, or N with a lone pair of electrons

Question 12

A molecule containing and H-N, H-Om or H-F bond

Answer 12

Hydrogen bond donor

Question 13

A molecule containing a highly electronegative atom (F, O, or N) with a lone pair

Answer 13

hydrogen bond acceptor

Question 14

a temporary uneven distribution of electrons caused by a spontaneous shift in electron density

Answer 14

Instantaneous dipole

Question 15

A temporary uneven distribution of electrons caused y the proximity of a spontaneous dipole

Answer 15

Induced dipole

Question 16

The temporary, weak attraction between an instantaneous dipole and an induced dipole.

Answer 16

Dispersion forces

Question 17

What type of force do all atoms and molecules experience?

Answer 17

Dispersion

Question 18

Does polarizability increase with size?

Answer 18

Yes

Question 19

The measure of how readily an electron cloud can become asymmetric

Answer 19

Polarizability

Question 20

The resistance to flow of a liquid

Answer 20

Viscosity

Question 21

The tendency of a liquid to minimize its surface area

Answer 21

surface tension

Question 22

Attraction to like particles

Answer 22

Cohesion

Question 23

Attraction to different particles

Answer 23

Adhesion

Question 24

The ability to flow against gravity up a narrow tube

Answer 24

Capillary action

Question 25

fusion

Answer 25

solid to liquid (melting)

Question 26

vaporization

Answer 26

liquid to gas

Question 27

a gas in contact with its liquid phase

Answer 27

Vapor

Question 28

condensation

Answer 28

gas to liquid

Question 29

sublimation

Answer 29

solid to gas

Question 30

The energy required for the vaporization of 1 mol of a liquid

Answer 30

Enthalpy of vaporization

Question 31

The energy required for the fusion of melting 1 mol of a solid

Answer 31

enthalpy of fusion

Question 32

The energy required for the sublimation of 1 mol of a solid

Answer 32

Enthalpy of sublimation

Question 33

does viscosity increase or decrease with mass?

Answer 33

Increase

Question 34

A substance with a high vapor pressure at normal temperatures is called _

Answer 34

volatile

Question 35

property that depends on how much of a substance there is

Answer 35

Extensive property

Question 36

Property that does not depend on the amount of the substance

Answer 36

Intensive property