2 Chemistry

Question 1

6 diff atoms of Orgo chem that are linked by covalent bonds

Answer 1

C
H
O
N
P
S

Question 2

Covalent bond

Answer 2

Electrons shared by two atoms

Question 3

Delocalization means what and what does it do

Answer 3

Sharing electrons, sharing electrons lowers the energy

Lower energy = increased stability = increased bond strength

Question 4

Valence

Electronegativity

Geometry

Answer 4

Number of bonds, determines the structures that can form

Attracting electrons

Bond angels, determines the shape

Question 5

Rank electronegativity

Answer 5

O attract e- strongly, shorter bonds
N
S
C
H
P

Question 6

Polar vs non polar

Answer 6

Unequal charge distribution

No polar is the equal sharing, no pull

Question 7

Tetrahedral

Answer 7

4 bonds

All paired 109.5
One lone pair 107
Two lone pairs 105 BENT

Double bond 120

Question 8

Single vs double bonds

Answer 8

Single can rotate freely around bond, zigzag structure

Double cannot rotate freely, flat and rigid structure

Question 9

Acid vs base

Answer 9

Acid is H+ donor

Base is H+ accepter

Question 10

Instantaneous reactions

Answer 10

When bonds between H+ and non bonded e- pairs in N and O form/break very spontaneously

Question 11

Resonance

Answer 11

Sharing electrons between 3 or more atoms

Increased resonance = increased stability

Question 12

Energy yielded from atp hydrolysis comes from what

Answer 12

The additional resonance stabilization of ADP that is formed

Question 13

Covalent vs non covalent

Answer 13

Covalent
Strong
Share electrons
Stable

Non covalent
Weaker
Non stable, break easily
Determine shape
Determine how molecules interact with each other
Large structures are held together by these bonds

Question 14

Non covalent bond order

Answer 14

H bond
Electrostatic
Hydrophobic

Question 15

Electrostatic aka

Answer 15

Ionic bond

Strength depends solely on distance

Question 16

Hydrogen bond

Answer 16

Strength depends on distance and orientation

Question 17

Hydrophobic bond

Answer 17

Solvent effect in water
Water pushes non polar molecules together because they prefer to associate with other water molecules

Strength depends on h bonds between water

Question 18

Non polar surfaces attract each other

Answer 18

FALSEEEE they are pushed together by the solvent aka water

Question 19

As neutral atoms move closer together,

Answer 19

Repulsion decreases and attraction between nuclei increases

Question 20

Covalent
Non covalent
Hydrophobic

Van deer walls

Answer 20

Covalent 50 holds atoms together in molecules

Non 5 holds molecules together

Van .5 determines the packing of atoms in folded structures and large molecular assemblies