3-1

Question 1

Distance from the earth to the most remote
known normal galaxies is calculated to be:

Answer 1

9x10^25 m

Question 2

Mean distance from the equator to the north
pole is:

Answer 2

ANSWER: 1x10^7 m

Question 3

Determine the volume in mL of 1mol of pure
ethyl alcohol.

Answer 3

58 mL

Question 4

Iodine vapor forms iodine crystals when it
touches a cold surface. What is the reverse
of the process being described?

Answer 4

sublimation

Question 5

What is the formula of the ionic compound that
is forced between the following ions: lithium and
chloride ions; lithium and oxide ions; lithium
and nitride ions?

Answer 5

LiCl, Li2O, Li3N

Question 6

From which plant is capsaicin extracted?

Answer 6

Capsicum

Question 7

What is the chemical formula of aspirin?

Answer 7

. C9H8O4

Question 8

Which of the following formula is red lead?

Answer 8

Pb3O4

Question 9

What is the common name of this compound
C6H5OCH3
?

Answer 9

. Anisole

Question 10

What is the formula of melamine?

Answer 10

C3H6N6

Question 11

Give the technical names of Sc3+, Ti2+ and Sr2+

Answer 11

Scandium (III) ion; Titanium (II) ion; Strontium (II)
ion

Question 12

Determine the gram molecular weights and equivalent
weights of the following: MgCO3; CO2; K2HPO4 and
NaNO3. Make the appropriate assumptions

Answer 12

84.4/42.3; 44.2/22.3; 175/88; 85.2/85.3

Question 13

What is the molecular weight in amu/g/mol
of 11-tetradecenyl acetate?
(amu C16H30O2)

Answer 13

254 (appears 25.4)

Question 14

What is the chemical formula of Alar?

Answer 14

C6H12N2O3

Question 15

Author of Octet Rule

Answer 15

Gilbert Lewis

Question 16

The theory of resonance was developed by
__ in order to further explain the bonding
structures of molecules or ions not covered
by the Lewis Octet rule

Answer 16

Linus Pauling

Question 17

Which compound is formed by the reaction
of malonic acid and urea with a catalyst, as
discovered by Adolf von Baeyer

Answer 17

Barbituric Acid

Question 18

What was the method used by Friedrich Wöhler
to break the vital force theory in nature?

Answer 18

Heating ammonium cyanate to form urea

Question 19

Who discovered EDTA?

Answer 19

Ferdinand Munz

Question 20

The Nobel Prize for radioactivity discovery
was shared between Curie and Roentgen.
Who coined the word “Serendipity” in 1754?

Answer 20

Horace Walpole

Question 21

Who invented vulcanized rubber?

Answer 21

Charles Goodyear

Question 22

Who discovered the structure of benzene?

Answer 22

Friedrich August Kekule

Question 23

Who is the father of Quantum Theory?

Answer 23

Max Planck

Question 24

Who discovered x-ray?

Answer 24

Wilhelm Conrad Roentgen

Question 25

What was Melvin Calvin was known for his study of?

Answer 25

photosynthesis

Question 26

What discovered Deuterium?

Answer 26

Harold C. Urey

Question 27

Father of nuclear chemistry and discovered proof of nuclear fission.

Answer 27

Otto Hann

Question 28

Who discovered carbon dating?

Answer 28

Willard Libby

Question 29

In an experiment it was found that the total charge on an oil drop was 5.93x10-18 C. How many negative charges does the drop contain?

Answer 29

37

Question 30

Define the relationship between the number of electrons in the valence shell and the number of covalent bonds it forms:

Answer 30

C = 4 electrons, 4 bonds; N = 5 electrons, 3 bonds; O = 6 electrons, 2 bonds; H = 2 electrons, 2 bonds

Question 31

Determine which of the following will float or sink in water: balsa wood, ethylene glycol, table salt, ethanol

Answer 31

float, sink, sink, float

Question 32

Which of the following symbols provides more information about the atom: 23Na or 11Na?

Answer 32

23Na

Question 33

What other particle is formed in the fusion of two protons to yield deuterium?

Answer 33

neutron

Question 34

Process of breaking down a large isotope into smaller isotopes.

Answer 34

nuclear fission

Question 35

Determine the number of days it will take for one milligram of rubidium to decay to 0.6 mg.

Answer 35

63

Question 36

Polymer used in bullet proof vest

Answer 36

: Linear Polyethylene

Question 37

Draw the condensed and skeletal structures of diethyl ether which is used by most doctors and hospitals as an anesthetic during operations.

Answer 37

CH3CH2OCH2CH3

Question 38

It is an organic reaction that converts an alcohol into an alkyl chlorine using triphenylphosphine and carbon tetrachloride.

Answer 38

Appel Reaction

Question 39

What compound can be used to convert alcohol or a phenol into an ester?

Answer 39

Acetic anhydride: CH3-C-O-COCH3

Question 40

What is the Nujol Mull in organic chemical reactions?

Answer 40

It is a mass spectrum technique and is obtained by grinding up a solid which is mixed with mineral oil to form a suspension for IR spectroscopy

Question 41

Explain the differences in structure between a saturated hydrocarbon from an unsaturated hydrocarbon.

Answer 41

A saturated hydrocarbons contains only carbon-carbon single bonds, while an unsaturated hydrocarbon contains one or more carbon-carbon double or triple bonds.

Question 42

Determine whether TRUE or FALSE about the constitutional isomer. A.) They have the same molecular formula B.) They have the same molecular weight C.) They have the same connectivity to their atoms D.) They have the same physical properties

Answer 42

. T; T; F; F

Question 43

Which of the following is a primary application of ethylene?

Answer 43

Use as a plant hormone for ripening of fruits

Question 44

What structural characteristics do citric acid and malic acid have in common?

Answer 44

They are both hydroxy acids

Question 46

Adrenaline is produced in the body through a biochemical nucleophilic substitution reaction where:

Answer 46

The reactant neocleophile atom replaces the leaving group in the nucleophylic substitution reaction

Question 47

What organic product is formed when C6H5CH2COOH is treated with CH3OH + H2SO4 (catalyst)?

Answer 47

C6H5CH2CO2CH3 + H20

Question 48

In a dehydration reaction where water is lost, an organic compound C3H8O reacts with concentrated phosphoric acid and a product is formed. This product rapidly decolorizes a solution of bromine in tetrachloromethane. What is this product?

Answer 48

Propene

Question 49

These compounds are formed by the reaction of acids with alcohols.

Answer 49

Esters

Question 50

Fatty acid such as lauric acid and palmitic acid and oleic acid are long unbranched carboxylic acids consisting of 12 to 20 carbon atoms. Which type of fatty acid should people avoid ingesting, saturated or unsaturated and why?

Answer 50

Saturated, because the risk of cardiovascular disease is increased

Question 51

It is the major component of lecithin.

Answer 51

Phosphatidylcholine

Question 52

Taurine, a Beta amino acid belongs to the acidic group of:

Answer 52

. –SO2OH

Question 53

In the study of fats and lipids, determine which of the two triglycerides has a higher melting point? Substance A containing only lauric acid and glycerol, or substance B-containing only stearic acid and glycerol?

Answer 53

B

Question 54

Glucose is the only carbohydrate compound that the brain can use for energy. Which pathway is mobilized to supply the need of the brain during starvation?

Answer 54

gluconeogenesis

Question 55

Predict the order of the melting points of triglycerides containing fatty acids, as follows: I. Palmitic, palmitic, stearic II. Oleic, stearic, palmitic III. Oleic, linoleic, oleic

Answer 55

III < II < I

Question 56

Which of the acid combination is the dominant composition of acid rain?

Answer 56

nitric acid and sulfuric acid

Question 57

Radioactive solid nuclear wastes are disposed off by

Answer 57

underground burial in concrete containers