resetar's lessons

Question 1

(colors) CrO4 2-

Answer 1

yellow

Question 2

(colors) C2O7 2-

Answer 2

orange

Question 3

(colors) MnO4-

Answer 3

purple

Question 4

Cu2+

Answer 4

blue green

Question 5

Ni

Answer 5

green

Question 6

Mn2+

Answer 6

pinkish

Question 7

PbI2

Answer 7

yellow, from Pb(NO3)2 + 2KI

Question 8

mole fraction=

Answer 8

mol solute/ total mol solution

Question 9

all mol fractions must add to

Answer 9

1

Question 10

molality (m)=

Answer 10

mol solute/ kg solvent

Question 11

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

Answer 11

concentration; solute PARTICLES; particles’ identity

Question 12

colligative properties include

Answer 12

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

Question 13

(colligative props) property=

Answer 13

[solute] * constant

Question 14

(colligative props) vapor pressure lowering:

Answer 14

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

Question 15

(colligative props) boiling pt elevation

Answer 15

ΔTb, []=molality, constant: kb

Question 16

(colligative props) freezing pt. depression

Answer 16

ΔTf, []=molality, constant: kf

Question 17

(colligative props) osmotic pressure

Answer 17

π, []=molarity, constant: RT

Question 18

(colligative props) Raoult’s Law: Psolution=

Answer 18

Xsolvent * P∘solvent

Question 19

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

Answer 19

vapor pressure

Question 20

(colligative props) more solvent, … Psolution

Answer 20

smaller

Question 21

(colligative props) ΔTb=

Answer 21

imKb

Question 22

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

Answer 22

dissociate; 2 particles

Question 23

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

Answer 23

double bonds; alkanes; CnH2n+2

Question 24

(orgo) unsaturated: …, called …

Answer 24

1 double bond; alkenes

Question 25

(orgo) polyunsaturated= more than

Answer 25

1 double bond

Question 26

(orgo) isomers: different ... but same ...

Answer 26

structures; formula

Question 27

(orgo) triple bonded organic compounds called

Answer 27

alkynes

Question 28

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

Answer 28

C; H; O

Question 29

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

Answer 29

C chain; carboxylic

Question 30

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

Answer 30

solids; animal

Question 31

(orgo) unsaturated fatty acids → ...

Answer 31

plant oils

Question 32

(orgo) fat=

Answer 32

1 glycerol + 3 fatty acids

Question 33

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

Answer 33

polymers; waters

Question 34

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

Answer 34

C; O; H; N; S

Question 35

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

Answer 35

C and N

Question 36

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

Answer 36

positively; negatively charged

Question 37

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

Answer 37

amphoteric; proteins

Question 38

(orgo) proteins have ... and ... groups at ends

Answer 38

amino; carboxylic

Question 39

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

Answer 39

C; H; O; N; P

Question 40

(orgo) nucleotides: ..., ..., .., ..

Answer 40

A; G; C;T

Question 41

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

Answer 41

pentosugar; base; phosphate

Question 42

(orgo) ... bonds hold DNA together

Answer 42

hydrogen

Question 43

(orgo) bleach formula is

Answer 43

sodium hypochlorite

Question 44

(orgo) vinegar formula

Answer 44

CH3COOH

Question 45

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

Answer 45

mass numbers and atomic numbers

Question 46

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

Answer 46

atomic numbers; identity; elements

Question 47

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

Answer 47

mass; energy; mass defect

Question 48

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

Answer 48

radioactive; particles

Question 49

(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

Answer 49

equal number of neutrons; 1.5 to 1

Question 50

gamma rays are

Answer 50

massless

Question 51

gamma rays are not included in

Answer 51

balanced nuclear equation

Question 52

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

Answer 52

dangerous; lead shielding

Question 53

penetrating ability:

Answer 53

gamma > beta > alpha

Question 54

penetrating ability order is also the order of ...

Answer 54

danger

Question 55

alpha particles are dangerous when

Answer 55

ingested

Question 56

solar fusion includes but isn't limited to

Answer 56

H + H --> He + energy

Question 57

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

Answer 57

chain reaction; nuclear power plants; explosion; bombs

Question 58

positron emission:

Answer 58

0 e 1

Question 59

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

Answer 59

83; radioactive; 43

Question 60

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

Answer 60

neutrons; innermost energy level; proton; another neutron

Question 61

shorter half-life:

Answer 61

less stable isotope