Ch11

Question 1

solids behavior

Answer 1

locked in place and vibrate

Question 2

what is special about water

Answer 2

it is more dense as liquid than solid

Question 3

gas properties density shape volume and intermolecular forces

Answer 3

low density indefinite shape indefinite volume weak forces

Question 4

liquid density shape vol intermolecular forces

Answer 4

high density indeterminate shape definite volume moderate bonds

Question 5

solid density shape volume and intermolecular forces

Answer 5

high density definate shape and definate volume and strong intermolecular bonds

Question 6

can liquids be compressed

Answer 6

no because they’re already compact together

Question 7

crystalline solid

Answer 7

solid with patterns in long range repeating order

Question 8

amorphous solid

Answer 8

random solid with no repeating order

Question 9

what can change state of matter besides temperature

Answer 9

pressure

Question 10

dispersion forces

Answer 10

occour because of instantaneous dipole moments because of functions in electron cloud of atoms and molecules

Question 11

relationship between boiling point and molar mass

Answer 11

boiling point increases as molar mass increases

Question 12

how do polar molecules compare to non polar molecules with boiling point

Answer 12

they have higher melting and boiling point

Question 13

where can you find hydrogen bond

Answer 13

in polar molecules that contain H bond directly to F O N

Question 14

what affect does hydrogen bond have on boiling and melting point

Answer 14

highly increases them

Question 15

why do protons and electrons bond to eachother

Answer 15

potential energy decreases when they do

Question 16

what are stronger intermolecular forces or bonding forces

Answer 16

bonding

Question 17

what are bonding forces

Answer 17

large charges over small distanxes

Question 18

what are intermolecular forces

Answer 18

small charges over large distance

Question 19

relationship with dispersion force and molar mass

Answer 19

increases with molar mass

Question 20

why does molar mass increasing affect disp force

Answer 20

larger particles have more things to stick to

Question 21

dipole dipole bonds

Answer 21

an intermolecular force exhibited by polar molecules which results from uneven charge distribution

Question 22

permanent dipole

Answer 22

seperation of charge where one end is slightly negative and the other is positive

Question 23

miscability

Answer 23

ability for substances to mix without separating into two phases

Question 24

can polar substances mix with nonpolar substances

Answer 24

nonpolar things mix with polar things non polar things mix with nonpolar things

Question 25

ion dipole force

Answer 25

intermediate force between ion and opposite charges end of polar molecule

Question 26

what is strongest intermolecular bond

Answer 26

ion dipole

Question 27

where do intermolecular bond forces happen

Answer 27

in empty space between atoms

Question 28

what is surface area

Answer 28

amount of energy required to increase surface area by unit amount

Question 29

surface tension

Answer 29

energy required to penetrate top layer of liquid

Question 30

viscosity

Answer 30

resistance of liquid to flow

Question 31

viscosity units

Answer 31

gs per cm s

Question 32

capillary action

Answer 32

ability for water to flow up against gravity

Question 33

what does concave meniscus mean

Answer 33

liquid more attracted to container

Question 34

what does convex meniscus mean

Answer 34

liquid more attracted to itself

Question 35

what is vaporization

Answer 35

transition from liquid to gas

Question 36

what is gas to liquid

Answer 36

condensation

Question 37

two reasons spilled water evaporates fast

Answer 37

less things holding it together and larger surface area

Question 38

meaning of volatile

Answer 38

vaporizes easily

Question 39

meaning of nonvolatile

Answer 39

doesn’t want to vaporize

Question 40

what increases rate of vaporization

Answer 40

temperature

Question 41

which molecules are the first to evaporate

Answer 41

the ones with most kinetic energy

Question 42

is vaporization or condensation exothermic

Answer 42

vapor exp condensation endo

Question 43

what is heat of vaporization

Answer 43

energy required to vaporize a mole of a liquid to a gas

Question 44

what is dynamic equilibrium

Answer 44

when rate of forward reaction equals backward reactiin

Question 45

what is vapor pressure correlated with

Answer 45

pressure, temp, surface area,and magnitude of intermolecular forces

Question 46

what is vapor pressure

Answer 46

the pressure of gas in dynamic equilibrium with its liquid

Question 47

boiling point

Answer 47

temperature that vapor pressure equals external pressure

Question 48

what is boiling point

Answer 48

temperature at which vapor pressure is 1atm

Question 49

claudia clapton equation

Answer 49

ln Pvap = -change in heat/ r * 1/T+lnB

Question 50

crit temp

Answer 50

temperature at which liquid cannot exist

Question 51

crit pressure

Answer 51

pressure to get liquid to unit temp

Question 52

supercritical liquids

Answer 52

characteristics of both liquid and gas and act as good solvent

Question 53

sublimation

Answer 53

molecules with too much thermal energy moving from solid to gas

Question 54

deposition

Answer 54

gas molecules colliding with solids and getting trapped by their intermolecular fields

Question 55

melting point

Answer 55

temp that solids have enough kin energy to become liquids

Question 56

melting/fusiin

Answer 56

going from solid to liquid

Question 57

heat fusiion

Answer 57

is heat required to melt a mop of solid

Question 58

phase diagram

Answer 58

for a given substances shows when it will be what form of matter

Question 59

triple point

Answer 59

3 states of mater are stable at equilibrium