Exam 2

Question 1

VSEPR Theory

Answer 1

predicts molecular shape and minimizes repulsion

Question 2

Molecular geometry of a molecule with 3 bonded atoms and 1 lone pair.

Answer 2

trigonal pyramidal

Question 3

Molecular geometry of a molecule with 4 bonded atoms and 1 lone pair

Answer 3

seesaw

Question 4

Molecular geometry of a molecule with 5 bonded atoms.

Answer 4

trigonal bipyramidal

Question 5

Molecular geometry of a molecule with 2 bonded atoms and 2 lone pairs.

Answer 5

bent

Question 6

Molecular geometry of a molecule with 2 bonded atoms and 1 lone pair.

Answer 6

bent

Question 7

Molecular geometry of a molecule with 3 bonded atoms and 2 lone pairs.

Answer 7

T-shaped

Question 8

Molecular geometry of a molecule with 6 bonded atoms

Answer 8

octahedral

Question 9

Molecular geometry of a molecule with 2 bonded atoms and 3 lone pairs

Answer 9

linear

Question 10

Valence bond theory

Answer 10

covalent bonds form when half-filled atomic orbitals of 2 atoms overlap

Question 11

A molecule with a steric number of 3 has a hybridization of ____.

Answer 11

sp²

Question 12

A molecule with a steric number of 4 has a hybridization of ___.

Answer 12

sp³

Question 13

A molecule with a steric number of 2 has a hybridization of ____.

Answer 13

sp

Question 14

Hybridized orbitals make _____ bonds.

Answer 14

sigma

Question 15

Unhybridized p orbitals make _____ bonds.

Answer 15

pi

Question 16

Isomers

Answer 16

compounds with the same chemical formula, but different molecular structures

Question 17

Diamagnetic molecules (have/don’t have) lone pairs and are (attracted to/repelled) by magnetic fields

Answer 17

don’t have & repelled

Question 18

Paramagnetic molecules (have/don’t have) lone pairs and are (attracted to/repelled) by magnetic fields

Answer 18

have & attracted to

Question 19

Solution

Answer 19

homogenous mixture of 2 or more substances

Question 20

Solvent

Answer 20

component of a solution that has the largest moles

Question 21

Solute

Answer 21

component of a solution that is being dissolved

Question 22

Miscible liquids

Answer 22

can dissolve

Question 23

Immiscible liquids

Answer 23

hard to dissolve

Question 24

Viscosity

Answer 24

measure of a liquids resistance to flow

Question 25

Density of water becomes (less/more) dense when freezing.

Answer 25

less

Question 26

Concave meniscus: (adhesion/cohesion)

Answer 26

(adhesion) liquid molecules are attracted to molecules on container

Question 27

Convex meniscus: (adhesion/cohesion)

Answer 27

(cohesion) liquid molecules are attracted to each other

Question 28

Electrolytes

Answer 28

a solute that produces ions that move

Question 29

Bronsted-lowry definition of an acid and base

Answer 29

acid: proton donor; base: proton acceptor

Question 30

Amphiprotic

Answer 30

substances that can function as an acid or a base

Question 31

Titration determines that concentration of a (solvent/solute)

Answer 31

solute

Question 32

All compounds containing these ions are soluble:

Answer 32

group 1, ammonium, nitrate, perchlorate, acetate

Question 33

Chlorine, Bromine, and Iodine are soluble, except when paired with:

Answer 33

silver, copper, mercury, lead

Question 34

Sulfate is soluble, except when paired with:

Answer 34

barium, calcium, mercury, lead, strontium

Question 35

Compounds containing these ions are insoluble, except when paired with G1 and ammonium:

Answer 35

fluorine, oxygen, carbonate, phosphate, chromate, arsenate, oxalate

Question 36

Hydroxide and sulfur are insoluble except when paired with:

Answer 36

calcium, strontium, barium, G1, ammonium