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WAZZAP > Quiz 12 > Flashcards

Quiz 12 Flashcards

1
Q
  1. Which process is used to separate a mixture of hydrocarbons with different boiling points?

cracking

oxidation

fractional distillation

dehydration synthesis

A

fractional distillation

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2
Q
  1. During condensation polymerization, two monomers may be joined by the removal of a molecule of

carbon dioxide

oxygen

water

hydrogen

A

water

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3
Q
  1. Which organic compound is a weak electrolyte?

acetic acid

carbon tetrachloride

pentane

benzene

A

acetic acid

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4
Q
  1. Which element is a nonmetallic liquid at room temperature?

hydrogen

oxygen

mercury

bromine

A

bromine

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5
Q
  1. What is the product of both fermentation reactions and saponification reactions?

an ester

an alcohol

an acid

a soap

A

an alcohol

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6
Q
  1. The following set of procedures was used by a student to determine the heat of solution of NaOH. (1) Read the original temperature of the water. (2) Read the final temperature of the solution. (3) Pour the water into a beaker. (4) Stir the mixture. (5) Add the sodium hydroxide. What is the correct order of procedures for making this determination?

1-3-5-2-4

5-4-3-1-2

3-1-5-4-2

3-5-4-1-2

A
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7
Q
  1. Which compounds are isomers?

1-propanol and 2-propanol

ethane and ethanol

methanoic acid and ethanoic acid

methanol and methanal

A

1-propanol and 2-propanol

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8
Q
  1. Given the equations 1, 2, 3 and 4 : (1) AgNO3 + NaCl  AgCl + NaNO3 (2) Cl2 + H2O  HClO + HCl (3) CuO + CO  CO2 + Cu (4) NaOH + HCl  NaCl + H2O Which two equations represent redox reactions?

1 and 2

3 and 1

2 and 3

4 and 2

A

2 and 3

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9
Q
  1. According to Bronsted-Lowry theory, and acid is any species that can

donate a proton

accept a proton

donate an electron

accept an electron

A

donate a proton

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10
Q
  1. Which statement best describes how a salt bridge maintains electrical neutrality in the half-cells of an electrochemical cell?

It prevents the migration of electrons.

It permits the two solutions to mix completely.

It permits the migration of ions.

It prevents the reaction from occurring spontaneously.

A

It permits the migration of ions.

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11
Q
  1. When sample X is passed through a filter paper, a white residue, Y, remains on the paper and a clear liquid, Z, passes through. When liquid Z is vaporized, another white residue remains. Sample X is best classified as

an element

a homogeneous mixture

a compound

a heterogeneous mixture

A

a heterogeneous mixture

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12
Q
  1. What is the total number of carbon atoms in molecule of glycerol?

1

3

2

4

A

3

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13
Q
  1. To be classified as a tertiary alcohol, the functional –OH group is bonded to a carbon atom tat must be bonded to a total of how many additional carbon atoms?

1

3

2

4

A

3

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14
Q
  1. Which conditions will increase the rate of a chemical reaction?

decreased temperature and decreased concentration of reactants

decreased temperature and increased concentration of reactant

increased temperature and decreased concentration of reactants

increased temperature and increased concentration of reactants

A
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15
Q
  1. Bleaches act on stains by

removing electrons during the oxidation process

reducing the colored compound by adding electrons.

exciting electrons to move between energy levels.

adding hydrogen ions to the stain.

A

removing electrons during the oxidation process

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16
Q
  1. One sample of a solution with a pH of 10 is tested with phenolphthalein and another sample of this solution is tested with litmus. In this solution the color of the litmus is

blue and the phenolphthalein is pink

blue and the phenolphthalein is colorless

red and the phenolphthalein is pink

red and the phenolphthalein is colorless

A

blue and the phenolphthalein is pink

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17
Q
  1. Methanal is the IUPAC name for an

aldehyde

alcohol

acid

ether

A

aldehyde

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18
Q
  1. On heating glucose with Fehling’s solution we get a precipitate whose color is

yellow

red

black

white

A

red

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19
Q
  1. If formaldehyde and KOH are heated we get

acetylene

methane

methanol

ethyl acetate

A

methanol

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20
Q
  1. Which of the following is formed when urea is heated?

ammonium cyanate

ammonia

carbon dioxide

formic acid

A

ammonia

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21
Q
  1. Also known as “The Clean Air Act of 1999”.

RA 8749

PD 984

RA 6969

PD 600

A

RA 8749

22
Q
  1. H+ is a/an

proton

acid

element

negatively charged electron

A

proton

23
Q
  1. Materials added to detergent formulation to enhance cleaning performance by exhibiting synergistic cleaning effect with surfactant.

fillers

brighteners

builders

perfume

A

builders

24
Q
  1. Esters are formed from condensation reactions between

alcohols and aldehydes

aldehydes and acids

ethers and acids

alcohols and acids

A

aldehydes and acids

25
Q
  1. Which of the following is the most reactive?

propene

propyne

propane

cyclopropane

A

propyne

26
Q
  1. What is the name of the following alkane? CH3—CH(CH3)—CH(CH3)—CH3

2,3-dimethyl butane

1-isopropyl-1-methyl ethane

1,1,2-trmethyl propane

1,3-dimethyl butane

A

2,3-dimethyl butane

27
Q
  1. Pentane and isopentane are what type of isomers?

aldehydes

chiral

structural

enantiomers

A

structural

28
Q
  1. An alkyne contains at least one of which of the following carbon-carbon bonds?

double

quadruple

triple

single

A

triple

29
Q
  1. How many carbon atoms does butane contain?

1

2

4

5

A

4

30
Q
  1. What is the hybridization of the oxygen atom in an aldehyde?

sp

sp³

d²sp³

sp²

A

sp²

31
Q
  1. CH3CH2C(O)NH2 is called a(n)

ketone

ester

aldehyde

amide

A

amide

32
Q
  1. What is the general formula for an aldehyde?

R-CO-OH

R-CO-H

R-O-R

R-OH

A

R-CO-H

33
Q
  1. What is the general formula for an alcohol?

R-CO-OH

R-CO-H

R-O-R

R-OH

A

R-OH

34
Q
  1. Of the following, which are the most reactive?

alkanes

alkenes

cycloalkane

alkynes

A

alkynes

35
Q
  1. Which of the following is not an alkane?

C3H8

C7H16

C5H12

C9H18

A

C9H18

36
Q
  1. What is the IUPAC name for the following compound? H3C— CH(CH3) — CH2 — C ==CH2

2,5-dimethylpentane

2,4-methylbutene

2,4-dimethyl-1-pentene

2,4-ethylbutene

A

2,4-dimethyl-1-pentene

37
Q
  1. What is the general formula for alkanes?

CnH2n

CnH2n-2

CnH2n-2

CnH2n+2

A

CnH2n+2

38
Q
  1. If each of the following is an alkane, which one must be cyclic?

C7H14

C22H46

C3H8

C12H26

A

C7H14

39
Q
  1. Which one of the following is a saturated hydrocarbon?

alkane

alkene

aromatic hydrocarbon

alkyne

A

alkane

40
Q
  1. What is the distinguishing characteristic of a carbohydrate?

carbonyl group

two-C-OH groups

Cx(H2O)y formula

six carbon atoms

A

Cx(H2O)y formula

41
Q
  1. If we add Cl2 to 1-butene, what is the product?

CH3CH2CCl2CH3

CH3CH2CCl2CHCl2

CH3CH2CH2CHCl2

CH3CH2CHClCH2Cl

A

CH3CH2CHClCH2Cl

42
Q
  1. What is the name of the following alkene? CH3—CH2—CH == CH—CH3

3-pentene

2-pentane

pentene-2

2-pentene

A

2-pentene

43
Q
  1. What is the name of the following compound?CH3—CH2—CH(OH)—CH3

3-butanol

2-butanol

3-pentanol

2-pentene

A

2-butanol

44
Q
  1. Which is not a correctly named alkyl group?

C2H5 – ethyl

C3H7—propyl

C4H10– butyl

CH3 – methyl

A

C4H10– buty

45
Q
  1. What is the name of the following compound? CH3—CH2—CH(CH3)—CH(CH3)—CH2—CH3

3,4-dimethylhexane

3-butylbutane

3-methyl 4-ethylpentane

3,5-octane

A

3,4-dimethylhexane

46
Q
  1. What is the basic formula of an alkyne of n carbon atoms?

CnH2n+2

CnH2n

CnHn

CnH2n-2

A

CnH2n-2

47
Q
  1. What characterizes a starch?

it is a collection of polysaccharides in plants

it is a cellulose

it is a trisaccharide

it has six carbons

A

it is a collection of polysaccharides in plants

48
Q
  1. CH2O is the empirical formula for

amino acids

proteins

Carbohydrates (sugar)

aldehydes

DNA and RNA

A

Carbohydrates (sugar)

49
Q
  1. A student observed that a small amount of acetone sprayed on the back of the hand felt very cool compared to a similar amount of water. Your explanation of this phenomena be that

all organic compound do this

acetone has a lower viscosity and transfers heat quanta better

water has a higher heat capacity than acetone, therefore retaining more heat

the higher vapor pressure of acetone results in more rapid evaporation and heat loss

the observed effect is not real and is only imagined

A

the higher vapor pressure of acetone results in more rapid evaporation and heat loss

50
Q
  1. When a pot of water boils on the stove, small bubbles form at the bottom of the pan and rise to the surface. What is inside these bubbles?

steam

hydrogen gas

oxygen gas

a vacuum

air

A

steam

WAZZAP (31 decks)

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