intermolecular forces and solids

Question 1

Intermolecular forces are____

Answer 1

forces that occur between molecules

Question 2

Intramolecular forces are ______

Answer 2

forces that occur in molecules

Question 3

The strongest intermolecular force is

Answer 3

ion-ion force

Question 4

What intermolecular force binds ions into crystals?

Answer 4

ion-ion force

Question 5

Which is stronger: intermolecular or intramolecular?

Answer 5

intramolecular is stronger

Question 6

What does ion-ion bonding depend on?

Answer 6

It depends on the charge and distance. The higher that charge, the stronger the bond, and the larger the distance, the weaker the bond.

Question 7

What is a dipole?

Answer 7

A dipole is a permanent distortion in electron that causes partial charges on different ends or poles of the molecule.

Question 8

The strength of an ion-dipole is dependent on?

Answer 8

The strength of an ion-dipole is dependent on the charge and the radius of the atoms/molecules

Question 9

heat of hydration

Answer 9

the energy it takes to add water to a system

Question 10

relationship between heat of hydration and strength of ion-dipole

Answer 10

the stronger the ion-dipole, the more heat of hydration is present

Question 11

Dipole-dipole interaction

Answer 11

this occurs between a dipole molecule and another dipole. The positive end of one orients itself so that it attracts the negative of the other.

Question 12

strength of dipole-dipole depends on?

Answer 12

the strength depends on the magnitude. The bigger the dipole, the stronger the interaction

Question 13

Hydrogen bonding

Answer 13

a hydrogen bond is a special type of dipole-dipole. This occurs when hydrogen bonds to a very electronegative atom/molecules that take so much of its electron that it is almost a proton.

Question 14

What electronegative atoms/molecules can hydrogen bond?

Answer 14

Fluorine, oxygen, and nitrogen (FON)

Question 15

Relationship between melting/boiling points with the strength of interaction

Answer 15

The stronger the interaction, the higher the boiling or melting point.

Question 16

Induced dipoles

Answer 16

These are temporary dipoles.

Question 17

ion-induced dipole

Answer 17

This occurs when an ion approaches a nonpolar substance and causes it to form a temporary dipole

Question 18

dipole-induced dipole

Answer 18

This occurs when a dipole approached a nonpolar substance and causes it to form a temporary dipole

Question 19

induced dipole-induced dipole

Answer 19

This occurs when an induced dipole approaches a nonpolar substance and causes sit to form a temporary dipole. They are also known as Lizard Dispersion forces

Question 20

Strength of induced dipoles

Answer 20

The strength of an induced dipole is dependent on the size of the atom/molecule

Question 21

Arrange the intermolecular forces from strongest to weakest.

Answer 21

ion-ion> ion-dipole> hydrogen bonding> dipole-dipole> ion-induced dipole> dipole-induced dipole> induced dipole-induced dipole

Question 22

crystalline solid

Answer 22

it is an ordered arrangement of repeated unit cells that have a lattice

Question 23

amorphous solid

Answer 23

it is a solid that has no repeated array. It has no lattice

Question 24

unit cell

Answer 24

it is the basic repeatable structure of a crystal

Question 25

coordination number

Answer 25

number of atoms that surround a given atom in a lattice

Question 26

what are the 3 types of a simple cubic unit cell

Answer 26

simple cubic, body-centered, face-centered

Question 27

the edge length of a simple cubic

Answer 27

2r

Question 28

the coordination number of a simple cubic

Answer 28

6

Question 29

atom per unit cell of simple cubic

Answer 29

1

Question 30

edge length of body-centered

Answer 30

4r/square root 3

Question 31

coordination number of body-centered

Answer 31

8

Question 32

atom per unit cell of body-centered

Answer 32

2

Question 33

edge length of face-centered

Answer 33

squareroot 8 *r

Question 34

coordination number of face-centered

Answer 34

12

Question 35

atom per unit cell of face-centered

Answer 35

4

Question 36

what is the angle of a simple cubic unit cell

Answer 36

90