Intermolecular Forces

Question 1

THE KINETIC MOLECULAR THEORY OF MATTER

Answer 1

• explains the observable properties of the states of matter

Question 2

Matter is made up of

Answer 2

tiny particles that are constantly moving

Question 3

What particles hv energy?

Answer 3

All

Question 4

What states has least energy?

Answer 4

Solid

Question 5

State has most energy?

Answer 5

Gas

Question 6

A phase changr occur as the

Answer 6

energy of particles is increased or
decreased.

Question 7

High amnt of space

Answer 7

Gas

Question 8

Least space

Answer 8

Solid

Question 9

5- Atoms and molecules have ?between them

Answer 9

attractive forces

Question 10

. The
larger the space, the ? the force of attraction.

Answer 10

weaker

Question 11

Intra

Answer 11

Within

Question 12

? force since there is
a bond that holds the two atoms
of the same molecule together.

Answer 12

intramolecular

Question 13

attractive force that holds the
the atoms of two molecules
together.

Answer 13

Intermolecular

Question 14

Intermolecular is ? Than intramolecular

Answer 14

Weaker

Question 15

The strength of interaction between molecules determines the ?,

Answer 15

Properties of a substance

Question 16

The strength of the interaction between molecules affects the ? and ?of compounds as well as the ? of one substance to another.

Answer 16

melting boiling point solubility

Question 17

• It also causes the compound to exist in ? at a given temperature.

Answer 17

certain states of matter (solid, liquid or gas)

Question 18

Three types of IMF exist in neutral molecules. They are collectively known as the “

Answer 18

van der Waals forces,

Question 19

Three types of IMF exist in neutral molecules. They are collectively known as the van der Waals forces, after the Dutch physicist ?

Answer 19

Johannes Diderik van der Waals

Question 20

These three types are presented in order of increasing strength:
• ?

Answer 20

London dispersion forces
• dipole-dipole interaction
• hydrogen bonding

Question 21

Londo Dispersion Forces inteoduced by

Answer 21

Fritz London

Question 22

Most ? substances exist as ? under ordinary conditions.

Answer 22

nopolar gas

Question 23

This is an indication that interaction between molecules of nonpolar substances is very ?.

Answer 23

weak

Question 24

London dispersion aka

Answer 24

It is also known as the instantaneous dipole-induced dipole interaction.

Question 25

• All ? compounds exhibit London dispersion forces.

Answer 25

covalent

Question 26

If is the weakest IMF.

Answer 26

London

Question 27

Although any single interaction “, dispersion many Londoni forces creates ? force.

Answer 27

Weak, storng

Question 28

London example

Answer 28

Gecko

Question 29

Attractive forces between polar covalent molecules

Answer 29

Dipole dipole inhrraction

Question 30

Hydrogen bonding

Answer 30

hydrogen atom bonded to O, N, or F is electrostatically attracted to an O, N, F atom in another molecule.

Question 31

Hydrogen atom bonded to very electronegative atoms:

Answer 31

- oxygen. nitrogen fluorine.

Question 32

strongest of the three types of IMF.

Answer 32

INTERMOLECULAR FORCES OF ATTRACTION 3. Hydrogen Bonding • It is the

Question 33

The ? is held together by an extensive network of hydrogen bonds.

Answer 33

double helix of DNA

Question 34

are present in all covalent compounds.

Answer 34

London dispersion

Question 35

present only in polar compounds with a permanent dipole

Answer 35

Dipole dipole interactions

Question 36

occurs only in compounds that contain O-H, N-H, H-F bond.

Answer 36

Hydrogen bond

Question 37

Dipole moment

Answer 37

occurs when one atom is more electronegative than another

Question 38

Polar Molecule

Answer 38

the positive charge end will attract to the negative charge end

Question 39

Molecular Geometry

Answer 39

Molecular Geometry – the arrangement of the atoms of molecules in space;

Question 40

The ? of compounds are greatly affected by their shape or geometry.

Answer 40

physical and chemical properties

Question 41

The ? can help determine the geometry of molecules. One dot = one valence electron; One dash = one single bond

Answer 41

Lewis electron-dot structure

Question 42

Molecular Geometry – based on

Answer 42

ased on the VSEPR theory;

Question 43

electron pairs are arranged around a central atom in a way that they can be as ?nas possible from each other

Answer 43

far apart

Question 44

if the shape of the molecule is symmetrical, it is polar or not?

Answer 44

Non