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Chem Subject Test > resetar's lessons > Flashcards

resetar's lessons Flashcards

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1
Q

(colors) CrO4 2-

A

yellow

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2
Q

(colors) C2O7 2-

A

orange

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3
Q

(colors) MnO4-

A

purple

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4
Q

Cu2+

A

blue green

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5
Q

Ni

A

green

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6
Q

Mn2+

A

pinkish

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7
Q

PbI2

A

yellow, from Pb(NO3)2 + 2KI

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8
Q

mole fraction=

A

mol solute/ total mol solution

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9
Q

all mol fractions must add to

A

1

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10
Q

molality (m)=

A

mol solute/ kg solvent

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11
Q

colligative properties: change in proportion to … of … and does not depend on …

A

concentration; solute PARTICLES; particles’ identity

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12
Q

colligative properties include

A

vapor pressure lowering, boiling pt. elevation, freezing pt. depression, and osmotic pressure

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13
Q

(colligative props) property=

A

[solute] * constant

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14
Q

(colligative props) vapor pressure lowering:

A

ΔP, []=mol fraction, constant: Pnaught solv

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15
Q

(colligative props) boiling pt elevation

A

ΔTb, []=molality, constant: kb

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16
Q

(colligative props) freezing pt. depression

A

ΔTf, []=molality, constant: kf

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17
Q

(colligative props) osmotic pressure

A

π, []=molarity, constant: RT

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18
Q

(colligative props) Raoult’s Law: Psolution=

A

Xsolvent * P∘solvent

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19
Q

(colligative props) Raoult’s law, P is the

A

vapor pressure

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20
Q

(colligative props) more solvent, … Psolution

A

smaller

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21
Q

(colligative props) ΔTb=

A

imKb

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22
Q

(colligative props) boiling pt. elevation: i=1 if solute does not …, i=2 for electrolyte that generates …, etc.

A

dissociate; 2 particles

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23
Q

(orgo) hydrocarbons: saturated= no … →called …, formula:

A

double bonds; alkanes; CnH2n+2

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24
Q

(orgo) unsaturated: …, called …

A

1 double bond; alkenes

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25
Q

(orgo) polyunsaturated= more than

A

1 double bond

26
Q

(orgo) isomers: different … but same …

A

structures; formula

27
Q

(orgo) triple bonded organic compounds called

A

alkynes

28
Q

(orgo) biochem: lipids & fats → lots of .., .., and a little …

A

C; H; O

29
Q

(orgo) fatty acids: long … with a … group at the end

A

C chain; carboxylic

30
Q

(orgo) saturated fatty acids → … at room temp, .. products

A

solids; animal

31
Q

(orgo) unsaturated fatty acids → …

A

plant oils

32
Q

(orgo) fat=

A

1 glycerol + 3 fatty acids

33
Q

(orgo) dehydration synthesis: two monomers combine covalently to form …, thus releasing

A

polymers; waters

34
Q

(orgo) amino acid: primarily …, …, …, …, and a little …

A

C; O; H; N; S

35
Q

(orgo) in amino acids, H and OH are lost and bond is created between

A

C and N

36
Q

(orgo) amino acids can be both … and …. simultaneously

A

positively; negatively charged

37
Q

(orgo) amino acids are always … in nature (…as well as they are made of amino acids)

A

amphoteric; proteins

38
Q

(orgo) proteins have … and … groups at ends

A

amino; carboxylic

39
Q

(orgo) nucleic acids made of .., …, …, ..

A

C; H; O; N; P

40
Q

(orgo) nucleotides: …, …, .., ..

A

A; G; C;T

41
Q

(orgo) nucleotides made of …, .., and … groups

A

pentosugar; base; phosphate

42
Q

(orgo) … bonds hold DNA together

A

hydrogen

43
Q

(orgo) bleach formula is

A

sodium hypochlorite

44
Q

(orgo) vinegar formula

A

CH3COOH

45
Q

(nuclear chemistry) for a balanced nuclear reaction, … and …. must be equal on each side

A

mass numbers and atomic numbers

46
Q

(nuclear chemistry) nuclear reactions involve changes in …. and …. of …

A

atomic numbers; identity; elements

47
Q

(nuclear chemistry) in nuclear reaction, … can be changed into …. This is called …

A

mass; energy; mass defect

48
Q

(nuclear chemistry) unstable isotopes are … and give off …

A

radioactive; particles

49
Q

(nuclear chemistry) why are some isotopes unstable? for elements with lower atomic numbers, number of protons should …., for other elements … to … ratio is more stable

A

equal number of neutrons; 1.5 to 1

50
Q

gamma rays are

A

massless

51
Q

gamma rays are not included in

A

balanced nuclear equation

52
Q

gamma rays are the most …, with … used for protection

A

dangerous; lead shielding

53
Q

penetrating ability:

A

gamma > beta > alpha

54
Q

penetrating ability order is also the order of …

A

danger

55
Q

alpha particles are dangerous when

A

ingested

56
Q

solar fusion includes but isn’t limited to

A

H + H –> He + energy

57
Q

fission starts a … which is used in … and can cause an …. such as those used in ..

A

chain reaction; nuclear power plants; explosion; bombs

58
Q

positron emission:

A

0
e
1

59
Q

all elements from … up are …, this includes atomic number …

A

83; radioactive; 43

60
Q

electron capture: not enough …, capture electron from …, combine with … to make …

A

neutrons; innermost energy level; proton; another neutron

61
Q

shorter half-life:

A

less stable isotope

Chem Subject Test (11 decks)

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