intermolecular forces

Question 1

matter is composed of

Answer 1

small particles

Question 2

matter is composed of

Answer 2

small particles

Question 3

the molecules interact with one another through

Answer 3

attractive forces

Question 4

the strength of these forces is related to the distance between particles

Answer 4

attractive forces

Question 5

these molecules are always in

Answer 5

constant random motion

Question 6

the ____ of a substance is a measure of the ____ ____ ____ of the molecules

Answer 6

temperature, average kinetic energy

Question 7

billard ball model

Answer 7

John Dalton

Question 8

plum pudding model

Answer 8

Sir Joseph John Thomson

Question 9

nuclear model

Answer 9

Ernest Rutherford

Question 10

building blocks of matter

Answer 10

atoms

Question 11

the attractive forces between molecules are known as the

Answer 11

intermolecular forces

Question 12

the ____ the interaction between two molecules, the ____ their distance will be

Answer 12

stronger, smaller

Question 13

___ have particles with strong intermolecular forces such that their particles are very close to one another

Answer 13

solids

Question 14

___ have intermediate intermolecular forces and particles are farther from one another

Answer 14

liquids

Question 15

___ weak intermolecular forces and particles are very far apart from one another

Answer 15

gases

Question 16

the extent of motion varies depending on the ____ and ____ of the interaction between the particles

Answer 16

temperature, strength

Question 17

particles only able to vibrate back and forth a specific point or location; have restricted motion

Answer 17

solids

Question 18

are able to move past each other; motion is restricted to small distances as they will collide with another molecule

Answer 18

liquids

Question 19

are able to move in relatively long distances before colliding with another molecule

Answer 19

gases

Question 20

at ____ temperature, intermolecular forces determine the state of substance

Answer 20

lower

Question 21

substances with ____ and ____ intermolecular forces will form a condensed phase either solid or liquid

Answer 21

intermediate, strong

Question 22

a higher temperature means

Answer 22

higher average kinetic energy

Question 23

increasing temperature also

Answer 23

weakens the intermolecular forces of attraction

Question 24

liquid water is heated, particles are able to move past one another in relatively long distances, process of which liquid is converted to gas

Answer 24

vaporization

Question 25

molecules in ice vibrates back and forth to a specific location since it is in solid phase, process where solid becomes liquid

Answer 25

melting

Question 26

inside the molecule; force which keeps the molecule together in hands & many times stronger

Answer 26

INTRAmolecular

Question 27

between 2 molecules; is the attractive force or bond between molecules, responsible for keeping matter in solid or liquid

Answer 27

INTERmolecular

Question 28

• weakest type of IMFA • present in all electrically neutral molecules (polar or nonpolar) • named after German-American physicist Fritz London • caused by fluctuations in electron distribution within atoms/molecules • causes nonpolar molecules to be polar temporarily (temporary attractive force) • two adjacent atoms occupy positions that make temporary dipoles/dipole-induced dipole attraction

Answer 28

London Dispersion Forces

Question 29

• this force exist between the partially positive end of one HCl molecule and the partially negative end of another HCl molecule • it has partially positive and partially negative ends • polar molecules, moderate ( increases with increasing polarity)

Answer 29

Dipole - Dipole Forces

Question 30

• result from electrostatic attraction between anion (-) or cation (+) and a molecule containing a dipole • strength of force increases as the charge of ion increases • solutions of ionic compounds dissolved in polar solvents • strong (increases with increasing ionic charge)

Answer 30

Ion - Dipole Forces

Question 31

• a special type of dipole-dipole force (strongest type of IMFA) • occurs when hydrogen is bonded to F, O or N (H-F, H-O, H-N bonds) • responsible for the usually high boiling point and melting point of water as compared to compounds of similar molecular weight and geometry

Answer 31

Hydrogen Bonding Forces