Lesson 1.2: Intermolecular Forces of Attraction

Question 1

The force of attraction between oppositely charged particles (i.e., ions) present in ionic compounds gives rise to __________.

Answer 1

ionic bonds

Question 2

Because these particles have distinct charges, the force of attraction that holds the formula units (particles of ionic compounds) together is described as __________ in nature and is strong enough to keep the compound solid at room temperature.

Answer 2

coulombic

Question 3

It refers to the particles of ionic compounds.

Answer 3

formula units

Question 4

It refers to the particles of covalent compounds.

Answer 4

neighboring molecules

Question 5

They are with relatively weaker intermolecular forces that may only exist as liquids.

Answer 5

covalent compounds

Question 6

Example of a covalent compound.

Answer 6

water

Question 7

Substances with no appreciable intermolecular forces have their molecules freely moving around and less contained by the attraction of other surrounding molecules.

Answer 7

gases

Question 8

What are dipole-dipole and London dispersion forces collectively known as?

Answer 8

van der Waals forces

Question 9

A type of bond that is formed when 1 atom transfers electrons to another atom, resulting in the formation of oppositely charged ions.

Answer 9

ionic bond

Question 10

It is composed of a cation and an anion.

Answer 10

ion

Question 11

A type of bond in which electrons are transferred from a metal to a nonmetal.

Answer 11

ionic bond

Question 12

A type of bond that increases the melting and boiling point.

Answer 12

ionic bond

Question 13

The electronegativity difference of ionic bond.

Answer 13

> _2.0 (large)

Question 14

A type of bond wherein the electrons are shared between two nonmetal atoms.

Answer 14

covalent bond

Question 15

The electronegativity difference of covalent bonds.

Answer 15

<2.0 (small)

Question 16

A type of bond wherein its bond strength is strong due to electrostatic forces.

Answer 16

ionic bond

Question 17

A type of bond wherein its bond strength is generally weaker than ionic bond.

Answer 17

covalent bond

Question 18

Examples of covalent bonds.

Answer 18

• Water (H20)
• Carbon Dioxide (CO2)
• Methane (CH4)

Question 19

It refers to the tendency of an atom to attract shared electrons in a bond.

Answer 19

electronegativity

Question 20

The EN of a nonpolar covalent.

Answer 20

<0.4 (0-0.4)

Question 21

The EN of a polar covalent.

Answer 21

<2.00 (0.5-2.0)

Question 22

The EN of an ionic bond.

Answer 22

> _2.0 (2.1-above)

Question 23

The EN of a nonpolar bond.

Answer 23

0

Question 24

The EN of a polar bond.

Answer 24

0.9

Question 25

It refers to a molecule or a part of a molecule with 2 opposite charges (a + end and a - end), resulting from an unequal distribution of electrons between two atoms involved in a chemical bond.

Answer 25

dipole

Question 26

It refers to the term that means evenly distributed and equal number of protons and electrons.

Answer 26

neutral

Question 27

An intermolecular force that exist between polar molecules.

Answer 27

dipole-dipole forces

Question 28

Example of dipole-dipole forces.

Answer 28

Hydrogen Chloride (HCI)

Question 29

An intermolecular force that possess a permanent dipole moment attributed to the difference in electronegativities of their component atoms and how these atoms are arranged in space.

Answer 29

dipole-dipole forces

Question 30

An intermolecular force that is a special type of dipole-dipole interaction that exists only in molecules that contain a hydrogen atom bonded to a small, highly electronegative atom.

Answer 30

hydrogen bond

Question 31

Example of a hydrogen bond.

Answer 31

N, O, or F.

Question 32

An intermolecular force that the more electronegative atom pulls the electron toward itself and gains a relatively large partial negative charge.

Answer 32

hydrogen bond

Question 33

Unlike covalent bonding, where electrons are involved and shared between atoms, __________ is not a real chemical bond participated in by electrons.

Answer 33

hydrogen bond

Question 34

It is a type of intramolecular force of attraction.

Answer 34

covalent bond

Question 35

It is intermolecular in nature.

Answer 35

hydrogen bonds

Question 36

An intermolecular force that is stronger than regular dipole-dipole forces.

Answer 36

hydrogen bonds

Question 37

An intermolecular force that acts between an ion and a polar molecule.

Answer 37

ion-dipole forces

Question 38

It refers to the positively charged ions.

Answer 38

cations

Question 39

They interact more strongly with dipoles than anions.

Answer 39

cations

Question 40

They are negatively charged ions.

Answer 40

anions

Question 41

An intermolecular force that is common in solutions of ionic compounds dissolved in polar solutions.

Answer 41

ion-dipole forces

Question 42

An intermolecular force that have these kinds of examples: - Na+ ions interacting with water molecules in a saltwater solution - Sodium ion in Methanol - Chloride ion in Ammonia

Answer 42

ion-dipole forces

Question 43

An intermolecular force that are simply dispersion forces.

Answer 43

London dispersion forces

Question 44

An intermolecular force that exist between all atoms and molecules.

Answer 44

London dispersion forces

Question 45

An intermolecular force that are the only forces acting in nonpolar molecules.

Answer 45

London dispersion forces

Question 46

An intermolecular force that arise from the continuous movement of electrons in particles.

Answer 46

London dispersion forces

Question 47

They have zero dipole moment because their electron density is uniform and symmetrical.

Answer 47

nonpolar molecules

Question 48

It refers to a temporary dipole.

Answer 48

instantaneous dipole

Question 49

This dipole can then induce dipoles in neighboring molecules.

Answer 49

instantaneous dipole

Question 50

An intermolecular force that are attractions between an instantaneous dipole and an induced dipole, as in the two helium atoms.

Answer 50

London dispersion forces

Question 51

It can affect the London dispersion force between two molecules.

Answer 51

the size of a molecule

Question 52

An intermolecular force that have the weakest IMF.

Answer 52

London dispersion forces

Question 53

An intermolecular force that attract between noble gases.

Answer 53

London dispersion forces

Question 54

An intermolecular force that uses Have No Fear of Iced Cold Beer.

Answer 54

London dispersion forces

Question 55

An intermolecular force that are stronger than London dispersion forces.

Answer 55

dipole-dipole forces