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Emily's New MCAT decks > Chem-Phys > Flashcards

Chem-Phys Flashcards

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1
Q

TLC can be used to see

A

if product formed

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2
Q

how add capacitors in series

A

1/C+1/C2…

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3
Q

wedge is

A

out of plane

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4
Q

can ethers be reduced if so with what

A

LiAlH3

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5
Q

velocity of blood from aorta to brain

A

speeds up

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6
Q

how can carboxylic acid be titrated

A

dissolve base titrate OH with acid

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7
Q

how do you know percieved light color if get absorbance

A

perceived color is comp to absorbed

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8
Q

what is a resolving agent

A

chiral molecule used to make diasteriomers from enantiomers so can be separated based on physical properties

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9
Q

when add half reactions Enot is

A

0

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10
Q

electrongetive atoms do what on NMR

A

desheild shift downfield

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11
Q

glyceraldehyde

A

2 hydroxyl and aldehyde

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12
Q

SN2 what is best LG

A

primary and bigger if halogen

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13
Q

retro aldol is

A

break bond btwn alpha and beta carbons

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14
Q

sp CH on IR is ____ sp2 CH is ___ sp3 CH is ___

A

3600, 3100, 3000

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15
Q

CH3 groups are

A

electron donating

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16
Q

whats better nucleophile

A

better base so higher pKa

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17
Q

isoprene unit is

A

5 carbon branched

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18
Q

higher BP means

A

more IMF, if same bigger size

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19
Q

Strecker synthesis makes

A

mix of L and D aa

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20
Q

protonation does what to solubility

A

makes insoluble in water

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21
Q

esters naming

A

alkyl from alcohol first

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22
Q

Reduction occurs where

A

cathode

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23
Q

what is used in gabrial aa synthesis

A

potasium phtalimide and diethyl bromomalonate

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24
Q

what is never in Ka equation

A

h2o

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25
Q

how are L aa depicted

A

H on dash (in)

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26
Q

mass and inertia effect acceleration and curvature how

A

smaller mass/inertia, bigger a, bigger curve

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27
Q

TLC is used for

A

purity

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28
Q

UV is for

A

pi systems

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29
Q

N in beta lactam is ___ hybridized

A

sp3

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30
Q

anhydride acyl substitution involves

A

break into carboxylic and ester

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31
Q

adiabatic is

A

no heat exchange

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32
Q

aldol condensation involves

A

make CC bond then OH eliminated

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33
Q

sterols dissolve best in

A

nonpolar

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34
Q

phosphatides are

A

diglycerides w/ P

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35
Q

if get preferred state it is the ____ product

A

thermodynamic

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36
Q

thermodynamic expansion equation

A

delta L= Lalphadelta T

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37
Q

Acids ___ nucelophilicity

A

reduce

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38
Q

tollens test detects

A

aldehydes and hydroxyl ketones

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39
Q

do alcohols or ketones have higher BP

A

alcohol

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40
Q

what is same if in parallel

A

voltage

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41
Q

how is I related to R

A

inversely V=IR

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42
Q

in series how get total R

A

add

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43
Q

ratio of bouyant forces is equal to

A

ratio of densities

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44
Q

UV ______ NMR ____

A

excites electrons, radio waves

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45
Q

lower Rf means

A

more polar

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46
Q

C=O on IR

A

1690-1650

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47
Q

structural isomers differ in

A

connectivity not formula

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48
Q

ketones with 1 prime amine yields ____ with 2 prime amine get ___

A

imine, enamine

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49
Q

protonation makes LG

A

better

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50
Q

Bent shape

A

2 bonds 2 LP

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51
Q

when is there no doppler shift

A

v is zero

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52
Q

Batteries convert ____ energy to ___

A

chemical to electric

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53
Q

X ray more energy than

A

infared

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54
Q

same column of periodic table

A

similar properties

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55
Q

Torque is opposite way of

A

orbit

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56
Q

more potential as

A

move away from earth

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57
Q

cytosine has how many carbonyls and thymine?

A

C 1, T 2

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58
Q

Diverging lens produce

A

virtual and reduced images

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59
Q

HB in DNA btwn

A

backbone amides and carbonyl s

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60
Q

the subscript number in molecular formula is

A

coordination number

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61
Q

Venturi effect

A

reduce pressure as flow through constricted pipe

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62
Q

GC increases

A

pi stacking forces

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63
Q

Kinases use phosphate from where

A

gamma ATP

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64
Q

which is more polar ketone or alcohol

A

alcohol

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65
Q

radiactive isotypes produce

A

daughter nuceli

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66
Q

doppler frequency is _____ to speed

A

inversely

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67
Q

sound can be generated by

A

expansion and contraction

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68
Q

open pipe means

A

distance half wavelength

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69
Q

Sound travels slowest where and cant where

A

gas, vacuum

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70
Q

velocity of photon is independent of

A

energy

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71
Q

harmonics are proportional to

A

length of string

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72
Q

empirical formula is

A

ratio of number of elements

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73
Q

Isotopes have

A

similar chemical properties dif phsyical

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74
Q

adding inhibitor will

A

decrease frequency of collisions

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75
Q

Fractional distillation if BP are

A

less than 25 C apart

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76
Q

electron capture is

A

proton converted to neutron

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77
Q

at STP how many L per mol

A

22.4 L/mol

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78
Q

pyruvate kinase makes

A

ATP

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79
Q

adding solute ____ BP and ____ MP

A

raises, lowers

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80
Q

gamma rays are ___ and beta minus releases ____

A

ionizing radiation, electron

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81
Q

Acetone structure and geometry

A

2 CH3 and carbonyl, sp2 120

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82
Q

electron withdrawing groups _____ carbocation

A

destabilize

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83
Q

More negative stabilization energy means

A

more stable

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84
Q

phagosome to lysosome use

A

mcirotubule

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85
Q

More reactive trend in periodic table

A

down group

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86
Q

disproportionation reaction is

A

ox and red occur in same element

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87
Q

smaller radii means ____ bond

A

shorter + stronger

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88
Q

if molecules have kinetic energy how does that change rate of rxn

A

faster

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89
Q

law of mass action is

A

rate of rxn prop to number moles

90
Q

H2 gas doesn’t form

A

low EN of both

91
Q

static force inc until max where equal to

A

normal force

92
Q

E=

A

delta V / d

93
Q

to become cation do electrons get lost from 3d or 4s first

A

4s

94
Q

mechanical advantage =

A

hypotenuse/ height

95
Q

liquid to gas is

A

endothermic

96
Q

what causes expiration

A

surface tension and elastic recoil

97
Q

surface tension is

A

cohesive forces

98
Q

how can oh be better lg

A

protonate

99
Q

mechanical advantage

A

output/input

100
Q

how is light carried long distances with little reduction amplitude

A

total internal reflection

101
Q

what happens when sound goes from air to glass

A

speeds up

102
Q

speed of sound is greatest where

A

solid/stiffer more forces

103
Q

pi bonds compared to sigma are

A

less stable, higher energy, lower dissociation energy

104
Q

colligative properties effected by

A

intermolecular, amount solute not identity

105
Q

electron affinity

A

desire gain electron

106
Q

ratio of height of image and object is related to

A

distance

107
Q

higher frequency impacts refraction index how

A

increase index

108
Q

electrolytic solutions do what to current

A

inc conduct

109
Q

sound doesnt propagate where

A

vacuum

110
Q

wider pipe ___ velocity ___ pressure

A

lower, higher

111
Q

catabolism requires

A

oxidizing agents

112
Q

size order of nucelotides

A

biggest G T C A smallest

113
Q

a disulfide bond is a

A

covalent

114
Q

protein unfolding is

A

coorperative

115
Q

farady/mole ratio

A

1:1

116
Q

seasaw geometry

A

4 bonds 1 LP

117
Q

how does frequency change before and after passing sound

A

before greater and after is less then actual

118
Q

faraday =

A

C/V

119
Q

isomer stability determined by

A

heat of combustion

120
Q

acetylation means adding

A

RC=O

121
Q

what doesnt change through medium

A

frequency

122
Q

what doesnt go in K equation

A

solids

123
Q

streker synthesis

A

use aldehyde and ammonia

124
Q

which is more polar ester or alcohol

A

alcohol

125
Q

weight in water is

A

W=mg

126
Q

monoprotic gas

A

3/2

127
Q

xray determines

A

3D structure

128
Q

buoyant force is equal to

A

Fb= density x volume sub x a

129
Q

why does a wall block out sound

A

some reflected

130
Q

fusion means

A

melting

131
Q

What is equivalence point of weak acid and strong base

A

> 7

132
Q

decarboxylation needs

A

beta carbonyl

133
Q

concave lens info

A

f=r/2 real and inverted

134
Q

displaced volume=

A

density of object/density liquid

135
Q

circular polarization is

A

out of phase by 90

136
Q

heat constant is higher when constant P or V

A

P

137
Q

which is more polar carbonyl or alc

A

OH

138
Q

something sterically hindered isnt

A

good nuc

139
Q

internal temp is proportional to

A

KE

140
Q

fluid moves from ___ hydrostatic pressure to ____

A

high to low

141
Q

fluid moves from ___ osmotic pressure to ____

A

low to high

142
Q

specific activity =

A

observed / (conc x length)

143
Q

single slit depends on

A

wavelength and width

144
Q

W=

A

P delta V

145
Q

what has negative focal length

A

diverging

146
Q

power of lens is

A

reciprocal of focal length

147
Q

Zeff=

A

mass number-core electrons

148
Q

neutrons=

A

mass number-protons

149
Q

which has higher overall bond dissociation energy single or triple

A

triple

150
Q

reference electrode is

A

known electric potential and conc

151
Q

concave lens are

A

diverging neg focal length

152
Q

plane-polarized light is a ____ technique

A

analytical not seperation

153
Q

What distills first

A

lower bP

154
Q

Positive electron potential is

A

spontaneous

155
Q

More negative stabilization energy means

A

more stable

156
Q

Purine pairs with

A

pyridine

157
Q

V relates to Q and C how

A

V=Q/C

158
Q

vacuum electron insulator means

A

no charge

159
Q

speed is same when

A

in vacuum

160
Q

NH on NMR

A

3600-3200

161
Q

what travels furthest in TLC

A

nonpolar (nonpolar mobile)

162
Q

entropy is measure of

A

disorder

163
Q

In exothermic rxn heat is ___ to enviro so H is __

A

released, neg

164
Q

Kp=

A

prod/react

165
Q

positive H and positive S means spon at ___ temps

A

high

166
Q

how does branching affect bp

A

dec

167
Q

which has lower BP ester or alc

A

ester

168
Q

radius of curvature is ___ focal length

A

2x

169
Q

how does I relate to Q and delta T

A

I=Q/delta T

170
Q

doppler f is apx equal to

A

f(source) delta V/ c

171
Q

stroke volume is equal to

A

max pressure- min

172
Q

P in mmhg is equal to

A

fluid density * height *g

173
Q

what enzyme to convert pyruvate to acetyl coA

A

pyruvate dehydrogenase

174
Q

Pa=

A

N/m^2

175
Q

unoccupied d orbital causes

A

colored

176
Q

Absorption is highest when _

A

extraction lowest

177
Q

gases behave ______ at higher temps

A

more ideally

178
Q

how to dissolve acid

A

use base acid base neutralize help

179
Q

in doppler speed is ___ to wavelength , as move away wavelength ___

A

proportional, increases

180
Q

Energy of ejected electron is equal to

A

Binding energy- photon absorbtion

181
Q

E cell=

A

Ecathode-E anode

182
Q

if ends in -ite acid name ends in -___

A

ous

183
Q

hydration causes

A

water shell to form

184
Q

in aldol condensation a ____ catalyst is used for ___ and ___

A

basic for nucleophilc addition and dehydration

185
Q

beta decay affects the ____

A

atomic number

186
Q

permanent dipole is

A

unequal sharing eg. c=o

187
Q

ion dipole bond is

A

full charge to partial

188
Q

BH3 selectively reduce ___ and NaBH4 ___

A

carboxylic, ketones and aldehydes

189
Q

acids do what in reaction

A

inc electrophilicity, inc LG stability, dec nucleophilicity

190
Q

electron donating groups create a ___ effect which makes ___ base

A

inductive, better

191
Q

amphiprotic

A

act acid and base

192
Q

efficiency

A

work out/work in

193
Q

Imide group

A

2 carbonyl N in middle

194
Q

impurities occur when

A

below MP, broad range

195
Q

TLC inc eluting strength with

A

inc solvent polarity

196
Q

phosphoric acid formula

A

H3PO4

197
Q

huckels rule

A

4n+2

198
Q

Roults law

A

adding nonvolatile dec vapor pressur e

199
Q

1 mol= ___ faradys

A

1

200
Q

gel electrophoresis uses a ___ cell

A

electrolytic

201
Q

peptide bond involves a

A

nucleophilic subsitution

202
Q

SN1 solvent

A

polar protic

203
Q

mannose structure

A

hexose, UUD

204
Q

nucleophilic acyl sub rxn is a

A

addition/elim on carbonyl compound

205
Q

axons are ____ charged

A

neg

206
Q

C=C on IR

A

1580-1610

207
Q

if enzyme is chiral get ____ product

A

1 product

208
Q

lens strength S =

A

1/f

209
Q

index of refraction =

A

speed light vacuum/speed in medium

210
Q

intensity relates to

A

frequency and number photons

211
Q

do e- get removed from 4s or 3d

A

4s

212
Q

n=

A

c/v

213
Q

f shift for doppler is ___ when toward ___ away

A

+, -

214
Q

when v is bigger change in f for doppler is

A

smaller

215
Q

diverging lens

A

virtual and reduced

216
Q

Q=

A

C * V

217
Q

acetate

A

CH3CO2

218
Q

neg ions flow to the ___ in an electrochem cell bc ____

A

anode, counter + charge that accumulates

219
Q

pascal law

A

P=F/A

220
Q

Energy of sound wave

A

prop to A^2

221
Q

how to get total mag of lens

A

add up

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