Part 3

Question 1

this is the ability of atoms to attract electrons in a bond

Answer 1

Electronegativity

Question 2

difference in electronegativity for nonpolar covalent bond

Answer 2

<0.4

Question 3

difference in electronegativity for polar covalent bond

Answer 3

0.4< ^EN < 1.7

Question 4

difference in electronegativity for ionic bond

Answer 4

^EN >~ 1.7

Question 5

is the force that holds two atoms together

Answer 5

Chemical Bond

Question 6

is formed by the attraction of the positive nucleus of one atom and the negative electrons of another atom

Answer 6

Bond

Question 7

these are the different types of chemical bonds

Answer 7

Metallic, Covalent, Ionic

Question 8

this is the attraction between the electropositive atoms and the delocalized electrons within the metal lattice

Answer 8

Metallic Bond

Question 9

this is the attraction resulting from the sharing of electrons of atoms

Answer 9

Covalent Bond

Question 10

this results in the overlap of orbitals of the atoms

Answer 10

Covalent Bond

Question 11

this basically means “same valency”

Answer 11

Covalent

Question 12

this is the resulting bond when two nonmetals combine

Answer 12

Covalent Bond

Question 13

this results from the attraction of the nucleus and the electron of two or more atoms

Answer 13

Covalent Bond

Question 14

this is the attraction resulting from the transfer of electrons between atoms (MRII)

Answer 14

Ionic Bond

Question 15

results when atoms of a metal (low electronegativity) and a nonmetal (high electronegativity) combine

Answer 15

Ionic Bond

Question 16

results from the attraction of two opposite charged particles (MRII)

Answer 16

Ionic Bond

Question 17

this type of bond involves a metal and a nonmetal

Answer 17

Ionic Bond

Question 18

polarity of bonding is dictated by

Answer 18

electronegativity

Question 19

this shows the direction of flow in a covalent bond; the direction of arrows

Answer 19

dipole moment

Question 20

bonding interactions are characterized by

Answer 20

bond energy, bond length, bond order

Question 21

what are the Properties of a Chemical Bond

Answer 21

1. Bond Energy; 2. Bond Length; 3. Bond Order

Question 22

this is the amount of energy involved when a bond is broken, which is of the same magnitude for the energy released when a bond is formed

Answer 22

Bond Energy

Question 23

is the distance between the nuclei of the atoms forming the bond

Answer 23

Bond Length

Question 24

is the number of bonds between two atoms in a covalent bond

Answer 24

Bond Order

Question 25

pertains to single bond, double bond, triple bond, and those intermediate between single and double bonds

Answer 25

Bond Order

Question 26

give the trend of the properties of bonds

Answer 26

^^ Bond Order, ^^Bond Energy , lower Bond Length | therefore, ^^ Bond Strength

Question 27

what are the octet/duet rule's strict followers

Answer 27

H, O, N, F

Question 28

this is the apparent charge of an atom in a molecule

Answer 28

Formal Charge

Question 29

the observed tendency of each atom of the main group elements to lose, gain, or share electrons in order to acquire 8 electrons in its valence shell resulting in the same electron configuration as a noble gas

Answer 29

Octet Rule

Question 30

this rules is especially applicable to carbon, nitrogen, oxygen, and the halogens, but also to metals such sodium and magnesium

Answer 30

Octet Rule

Question 31

this represents the arrangement of valence electrons among the atoms in a molecule.

Answer 31

Lewis Structure

Question 32

these are cases wherein there is more than one Lewis Structure to represent a molecule or polyatomic ion

Answer 32

Resonance Structure

Question 33

this vary in their contribution to the true structure of the molecule or ion. Some of "this" are equivalent and contribute equally to the true strunture

Answer 33

Resonance Structure

Question 34

the model used for the approximation of molecular geometry is

Answer 34

VSEPR or valence shell electron pair

Question 35

this states that the structure around an atom is determined principally by minimizing electron pair repulsions

Answer 35

VSEPR or valence shell electron pair

Question 36

this type of geometry only considers the arrangement of the bonds, ignoring the lone pairs

Answer 36

Molecular geometry

Question 37

this type of geometry considers the arrangement of all electron pairs

Answer 37

Electron pair geometry

Question 38

what is the meaning of IMFA

Answer 38

Intermolecular Forces of Attraction

Question 39

collective term for all the interactions of all the molecules

Answer 39

Van der Waals Forces

Question 40

what are the three types of IMFA

Answer 40

1. London Dispersion Force (LDF) 2. Dipole-Dipole Interaction (DDI) 3. Hydrogen Bonding (HB)

Question 41

this IMFA has a temporary or instantaneous dipole; this also exists in all molecules and atoms

Answer 41

London Dispersion Force (LDF)

Question 42

what are the two factors that affect LDF and how do they affect it?

Answer 42

1. Molar mass - direct proportional; higher mass molar mass means higher dipole 2. Arrangement - the more linear, the stronger LDF

Question 43

this IMFA is exhibited by polar molecules; has a permanent dipole; and is generally stronger than LDF

Answer 43

Dipole-Dipole Interaction (DDI)

Question 44

this IMFA is a special type of DDI which is the strongest among the three

Answer 44

Hydrogen Bonding

Question 45

this type of IMFA is present is the number is bonded to a highly electronegative atom (F,O,N)

Answer 45

Hydrogen Bonding

Question 46

this type of interaction is technically not an intermolecular force (not IMFA) but is an interaction

Answer 46

Ion-Dipole Interaction

Question 47

what are some of the properties that are affected by IMFA

Answer 47

1. Directly Proportional: - Boiling/Melting Point - Heat of Vaporization/Fusion - Viscosity - Surface Tension 2. Inversely Proportional: - Vapor Pressure

Question 48

what are the general guidelines for assessment for the IMFA

Answer 48

1. difference in molar mass, significantly large, LDF will dominate 2. difference in molar mass, NOT significantly large, DDI will dominate 3. Hydrogen Bonding will generally dominate