Bonding - intermolecular forces

Question 1

which substance have intermolecular forces between molecules

Answer 1

simple molecules

Question 2

are intermolecular forces strong or weak

Answer 2

weak

Question 3

what are the 3 types of intermolecular forces

Answer 3

Hydrogen bonding
permeant diploe diploe
induced dipole dipole

Question 4

which is the strongest type of intermolecular forces

Answer 4

hydrogen bonding

Question 5

which is the weakest type of intermolecular forces

Answer 5

induced dipole dipole

Question 6

when is a molecule non polar

Answer 6

molecules is symmetrical, diploes cancel out

Question 7

when is the molecule polar

Answer 7

molecule is not symmetrical, dipoles do not cancel out

Question 8

when substance with a simple molecular structure are melted or boiled what is broken

Answer 8

weak intermolecular forces

Question 9

do simple molecules have a high melting point or a low melting point

Answer 9

Low. the weak intermolecular forces between molecules are broken

Question 10

what is the strongest intermolecular force between polar molecule

Answer 10

permanent dipole-dipole

Question 11

what is the strongest intermolecular force between non polar molecule

Answer 11

induced dipole dipole

Question 12

what is the strongest intermolecular force between simple molecules that have a H bonded to an N O or F

Answer 12

Hydrogen bonding

Question 13

how do you know if molecules have hydrogen bonding between them

Answer 13

they have H bonded to an N,O or F
a lone pair of electrons on the F, O or N

Question 14

hydrogen bonding is the strongest type of intermolecular forces

Answer 14

true

Question 15

induced dipole dipole is the weakest type of intermolecular forces

Answer 15

true

Question 16

explain how is an induced dipole dipole intermolecular force is formed between 2 non polar molecules

Answer 16

random movement of electrons in one molecule (atom) leads to an uneven distribution of electrons creating a
temporary diploe in one molecule (atom) this
induces a dipole in a neighboring molecule (atom)
dipoles attract

Question 17

is the strongest intermolecular force between molecule is hydrogen bonding which other intermolecular forces do they have

Answer 17

permeant dipole dipole
induced dipole dipole

Question 18

is the strongest intermolecular force between molecule is permanent dipole dipole which other intermolecular forces do they have

Answer 18

induced dipole dipole

Question 19

Non-polar molecules only have induced dipole dipole force s between molecules true or false

Answer 19

true

Question 20

what increases the strength of induced dipole dipole forces

Answer 20

more electrons
more surface contact area

Question 21

which has stronger induces dipole dipole Cl2 or Br2

Answer 21

Br2 it has more electrons

Question 22

which has stronger induces dipole dipole F2 or I2

Answer 22

I2 as it has more electrons

Question 23

which has stronger induces dipole dipole S8 or P4

Answer 23

P4 as its a bigger molecule has more electrons

Question 24

which has stronger induces dipole dipole C3H8 or C4H10

Answer 24

C4H10 bigger molecule has more electrons

Question 25

which has higher boiling point Cl2 or Br2

Answer 25

Br2 has more electrons so stronger induced dipole dipole

Question 26

which has higher boiling point F2 or I2

Answer 26

I2 it has more electrons so stronger induced dipole dipole

Question 27

is CCl4 polar or non polar (draw it)

Answer 27

Non polar symmetrical molecule dipoles cancel out

Question 28

is CHCl3 polar or non polar molecule (draw it)

Answer 28

polar not symmetrical molecule dipole do not cancel out

Question 29

why does HBr have a higher melting point than HCl

Answer 29

Both polar molecules strongest intermolecular forces is permeant dipole dipole they will also have induced dipole dipole HBr has more electrons than HCl stronger induced dipole dipole attraction

Question 30

why does HI have higher melting point than HCl

Answer 30

Both polar molecules strongest intermolecular forces is permeant dipole dipole they will also have induced dipole dipole HBr has more electrons than HCl stronger induced dipole dipole attraction

Question 31

why does HI have higher boiling point than HF

Answer 31

Both polar molecules strongest intermolecular forces is permeant dipole dipole they will also have induced dipole dipole HBr has more electrons than HCl stronger induced dipole dipole attraction

Question 32

why does HI have higher boiling point than HF

Answer 32

Both polar molecules strongest intermolecular forces is permeant dipole dipole they will also have induced dipole dipole HBr has more electrons than HCl stronger induced dipole dipole attraction

Question 33

would the molecule be polar or non polar is it is symmetrical and dipoles cancel out

Answer 33

non polar

Question 34

would the molecule be polar or non polar if is not symmetrical and dipole do not cancel out

Answer 34

polar

Question 35

which molecules would have a higher melting point? molecules with hydrogen bonding or induced dipole dipole forced

Answer 35

hydrogen bonding as it requires more energy to break the intermolecular forces

Question 36

correct the following statement: simple molecules have low melting point as they have intermolecular forces which require less energy to break tph bond

Answer 36

simple molecules have low melting points as they have intermolecular forces BETWEEN MOLECULES which require less energy to break the FORCE

Question 37

correct the following statement: Cl2 has lower boiling point than Has induced dipole diploe forces and HF has hydrogen bonding. induced dipole dipole is weaker than hydrogen bonding less energy is required to break the bond between Cl2

Answer 37

Cl2 has lower boiling point that HF. Cl2 has induced dipole dipole forces between molecules and HF has hydrogen bonding between molecules induced dipole dipole forces are weaker than hydrogen bonding less energy is required to the break the force between Cl

Question 38

how does permeant dipole dipole arise

Answer 38

difference in electronegativity leads to bond polarity dipole can cancel therefore the molecules has an overall permanet dipole there is an attraction between s+(delta h) on one molecule and s- (delta h) on another