CHEMICAL BONDING

Question 1

Which property of Teflon leads to its use in many laboratory settings?
* High melting point
* Nonstick ability
* Resistance to corrosion

Answer 1

• Resistance to corrosion

Question 2

Ability of materials to interact with natural biological materials without triggering an immune response

Answer 2

Biocompatibility

Question 3

Nature of electrical charges on surfaces that require biocompatible coatings

Answer 3

Polarity

Question 4

compounds form between metals and nonmetals

Answer 4

Binary ionic compounds

Question 5

Energy released when isolated atoms form a covalent bond

Answer 5

Bond energy

Question 6

Distance between the nuclei of the bonded atoms

Answer 6

Bond length

Question 7

An atom will form covalent bonds to achieve a complement of eight valence electrons

Answer 7

Octet rule

Question 8

The valence shell electronic configuration is ________ for a total of eight electrons

Answer 8

ns^2 np^6

Question 9

keep track of valence electrons, especially for compounds of main group elements, allowing prediction of bonding in molecule

Answer 9

Lewis dot symbols

Question 10

show how electrons are shared in a molecule

Answer 10

Lewis structures

Question 11

A pair of shared electrons between two atoms is a

Answer 11

bonding pair

Question 12

Pairs of electrons associated with one atom are

Answer 12

nonbonding or lone pair electrons

Question 13

an exception to the octet rule as it shares only two electrons

Answer 13

Hydrogen

Question 14

results when two bonding pairs are shared

Answer 14

double bond

Question 15

results when three bonding pairs are shared

Answer 15

triple bond

Question 16

is the attraction of an atom for the shared electrons in a
covalent bond

Answer 16

Electronegativity

Question 17

are used to describe compounds whose bonding falls in the middle of this continuum

Answer 17

Electronegativity and bond polarity

Question 18

are assigned based on factors such as atomic size, electron affinity, and ionization energy

Answer 18

Electronegativities

Question 19

Electronegativities increase from __________ across a period and from bottom to top for a group

Answer 19

left to right

Question 20

is not shared equally when elements with different electronegativities bond

Answer 20

Electron density

Question 21

The two points of positive and negative charge constitute a

Answer 21

dipole

Question 22

The bond has an electric field associated with it and is known as a

Answer 22

polar bond

Question 23

Also referred to as a polar covalent bond since electrons are still being shared

Answer 23

Bond Polarity

Question 24

can be drawn when the choice of multiple bond location is arbitrary

Answer 24

Resonance structures

Question 25

The actual structure is a ____________, an average of the contributing structures, and not a mixture of them

Answer 25

resonance hybrid

Question 26

The positions of all atoms are identical; only the positions of the electrons are different

Answer 26

Resonance structures

Question 27

We can refer to the electron pairs as

Answer 27

electron domains

Question 28

electron-domain geometries for two through six electron domains

Answer 28

Linear Trigonal Planar Tetrahedral Trigonal bipyramidal Octahedral

Question 29

If there are only two atoms in the molecule, the molecule will be ________ no matter what the electron domain is.

Answer 29

linear

Question 30

Trigonal Planar

Answer 30

Trigonal Planar Bent

Question 31

3 if all the electron domains are bonding if one of the domains is a nonbonding pair.

Answer 31

Trigonal Planar Bent

Question 32

4 * _____, if all are bonding pairs * ______ if one is a nonbonding pair * ______ if there are two nonbonding pairs

Answer 32

Tetrahedral Trigonal pyramidal Bent

Question 33

5 There are four distinct molecular geometries in this domain:

Answer 33

* Trigonal bipyramidal * Seesaw * T-shaped * Linear

Question 34

6 There are three molecular geometries:

Answer 34

* Octahedral * Square pyramidal * Square planar