Module 1: Kinetic Molecular Model of Liquids and Nature of Solid Forces

Question 1

resistance of a liquid surface to external force due to a strong cohesive IMF, especially in water due to hydrogen bonding

Answer 1

surface tension

Question 2

weakest IMF force
dominant in nonpolar substances

Answer 2

London dispersion forces

Question 3

hold atoms together in a molecule

Answer 3

Intramolecular Forces

Question 4

forces of attraction between molecules that determine the physical properties like boiling and melting points

Answer 4

Intermolecular Forces

Question 5

stronger IMF, ____ boiling point

Answer 5

higher

Question 6

occurs between ion and a polar molecule

Answer 6

Ion-Dipole Forces

Question 7

occurs between polar molecules where positive and negative attracts

Answer 7

Dipole-Dipole Forces

Question 8

important in dissolving iconic compounds in water

Answer 8

Ion-Dipole Forces

Question 9

occurs when hydrogen is bonded to highly electronegative elements like F, O, N

Answer 9

Hydrogen Bonds

Question 10

surface tension measure in ____

Answer 10

dynes/cm

Question 11

tendency of a liquid to rise in narrow tubes

Answer 11

Capillary Action/ Capillarity

Question 12

narrower tube, the _______ the liquid will reach

Answer 12

higher

Question 13

intermolecular attraction between like molecules

Answer 13

Cohesion

Question 14

resistance of liquid to flow

Answer 14

Viscosity

Question 15

intermolecular attraction between unlike molecules

Answer 15

Adhesion

Question 16

stronger IMF, _____ viscosity

Answer 16

higher

Question 17

pressure exerted by liquid’s vapor

Answer 17

Vapor Pressure

Question 18

a liquid boils when its vapor is equal to the ___

Answer 18

Atmospheric Pressure

Question 20

based on the idea that matter is composed of tiny particles that are always in motion
explains the observable properties and behaviors of solids, liquids, and gases

Answer 20

Kinetic Molecular Theory

Question 21

matter is made of particles that are constantly in motion

Answer 21

Kinetic Energy

Question 22

increased temperature means ______ speed

Answer 22

greater

Question 23

scientist who coined the term van der waals force

Answer 23

Johannes Diderik van der Waals

Question 24

London dispersion forces named after the German born physicist _____

Answer 24

Fritz London

Question 25

distortion of the electron cloud brought about by the presence of a highly charged particle

Answer 25

Polarization

Question 26

work required to increase the surface area of a liquid by a unit area

Answer 26

Surface Free Energy

Question 27

surface tension is found to _______ with increasing temperature

Answer 27

decrease

Question 28

the process in which the gaseous molecules have the tendency to return to their liquid phase

Answer 28

Condensation

Question 29

condition at which there is a negligible net change rate of evaporation is the same as the rate of condensation

Answer 29

Equilibrium

Question 30

ability to readily evaporate from an open vessel

Answer 30

Volatility

Question 31

effective method in separating the components of a mixture or in the removal of impurities in solvents

Answer 31

Distillation

Question 32

molecule that contains a hydrogen atom and a base is a molecule that contains hydroxide

Answer 32

Acie

Question 33

ability to resist extreme pH changes

Answer 33

Buffer

Question 34

uninvolved the transfer of protonsfromand to the same identical molecule

Answer 34

Autoprotolysis