Question 1

Predict the products for the reaction of the following set of reactants. Sr(s)  + H2O(l)  →

Accepted Answer

A)  SrO( s) + H 2( g) 
B)  Sr 2+( aq) + H 2( g) + O 2( g) 
C)  Sr 2+( aq) + H 3O +( aq) 
D)  Sr(OH) 2( s) + H 2( g) 
E)  SrH 2( s) + O 2( g) F) D) and E)
G) B) and E)

Question 2

Which element forms compounds that are involved in smog and acid rain?

Accepted Answer

A)  Carbon
B)  Fluorine
C)  Chlorine
D)  Boron
E)  NitrogenF) A) and B)
G) A) and C)

Question 3

Carbon monoxide's toxicity is related to its ability to bond to iron in hemoglobin.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following has the most allotropes?

Accepted Answer

A)  Carbon
B)  Sulfur
C)  Oxygen
D)  Selenium
E)  NitrogenF) D) and E)
G) None of the above

Question 5

Dinitrogen monoxide, N2O, is

Accepted Answer

A)  a brown poisonous gas that is one of the chemicals involved in the production of photochemical smog.
B)  a colorless gas used in the production of nitric acid.
C)  a colorless gas used as a propellant in canned whipped cream.
D)  a colorless gas that disproportionates into nitrogen and oxygen.
E)  None of these choices are correct.F) A) and D)
G) C) and D)

Question 6

Unlike the remainder of the Group 1A(1)  elements, lithium forms many salts that have some covalent bond character. What is a reason for this behavior?

Accepted Answer

A)  The high first ionization energy of lithium makes sharing the electron easier than transferring it.
B)  The high charge density on the lithium cation deforms nearby polarizable electron clouds.
C)  The atomic radius of lithium enables it to share its valence electron effectively.
D)  Since lithium has only 1 electron in its 2s orbital, it can accept an electron from another element.
E)  Lithium's electronegativity is more like that of a non-metal than a metal.F) B) and D)
G) C) and D)

Question 7

Predict the products for the following set of reactants. Ca3As2(s)  + H2O(l)  →

Accepted Answer

A)  As 3+( aq) + Ca(OH) 2( aq) 
B)  As(OH) 3( s) + Ca 2+( aq) + H 2( g) 
C)  As(OH) 3( s) + Ca(OH) 2( aq) 
D)  AsH 3( g) + Ca(OH) 2( aq) 
E)  CaH 2( aq) + As 2O 3( aq) F) B) and E)
G) A) and D)

Question 8

Most of the alkali metal salts are soluble in water while many alkaline earth salts have very low solubilities. Why is this so?

Accepted Answer

A)  The alkali metal cations are smaller than the alkaline earth cations and are more easily hydrated.
B)  The alkali metals have lower ionization energies than alkaline earth elements.
C)  The alkaline earth salts have much greater lattice energies than the alkali metal salts.
D)  The alkaline earth metals have greater heats of atomization than the alkali metals.
E)  Alkaline earth cations have very low heats of hydration.F) None of the above
G) B) and C)

Question 9

Which of the following oxides will be the most acidic?

Accepted Answer

A)  Al 2O 3
B)  Ga 2O 3
C)  In 2O 3
D)  Tl 2O 3
E)  None of these oxides is acidic.F) C) and D)
G) None of the above

Question 10

Elements of group 1A have higher melting and boiling points than those of group 2A.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following substances is produced when lithium metal reacts with oxygen gas?

Accepted Answer

A)  Hydrogen gas
B)  Lithium peroxide
C)  An acidic oxide
D)  A basic oxide
E)  Lithium hydroxideF) C) and D)
G) All of the above

Question 12

Predict the products for the following set of reactants. H2O(l)  + ClF5(l)  →

Accepted Answer

A)  HClO 2( aq) + HF( aq) 
B)  HClO 3( aq) + HF( aq) 
C)  HClO( aq) + HF( aq) 
D)  HCl( aq) + HF( aq) 
E)  HClO( aq) + HFO( aq) F) All of the above
G) A) and B)

Question 13

Predict the products formed from the following set of reactants. FeSe(s)  + HCl(aq)  →

Accepted Answer

A)  Se( s) + FeCl 2( aq) 
B)  SeCl 2( s) + Fe( s) + H 2( g) 
C)  FeH 2( s) + SeCl 2( l) 
D)  H 2Se( g) + Fe( s) + Cl 2( g) 
E)  H 2Se( g) + FeCl 2( aq) F) A) and E)
G) B) and E)

Question 14

Ozone is both a pollutant and a natural component of the atmosphere.

Accepted Answer

A) True 
 B)False

Question 15

Silicon halides have stronger bonds than corresponding carbon halides. Which of the following is a possible explanation of this phenomenon?

Accepted Answer

A)  The larger silicon atoms permit better overlap of its atomic orbitals with those of the halogens than the smaller carbons atoms do.
B)  The large electronegativity difference between silicon and the halogens makes their bonds stronger than those of carbon.
C)  Silicon has the ability to form a partial double bond with a halogen through the overlap of its d-orbital with a p-orbital of the halogen.
D)  Silicon has a larger effective nuclear charge than carbon which allows it to bond more strongly to the more negative halogens than carbon.
E)  Carbon-halogen bonds are unusually weak.F) D) and E)
G) C) and D)

Question 16

Predict the products for the following set of reactants. Li(s)  + H2O(l)  →

Accepted Answer

A)  Li +( aq) + H 2( g) + O 2( g) 
B)  Li +( aq) + H 2( g) + OH −( aq) 
C)  LiH( s) + O 2( g) 
D)  Li +( aq) + H 2O 2( aq) 
E)  LiOH( aq) + H 2O 2( aq) F) B) and D)
G) D) and E)

Question 17

Which of the following oxides will give the most acidic solution when dissolved in water?

Accepted Answer

A)  MgO
B)  Al 2O 3
C)  Cl 2O
D)  SrO
E)  H 2O 2F) D) and E)
G) None of the above

Question 18

Predict the products for the reaction of the following set of reactants. CaO(s)  + H2O(l)  →

Accepted Answer

A)  Ca 2+( aq) + OH −( aq) + H 2( g) 
B)  Ca 2+( aq) + H 2( g) + O 2( g) 
C)  Ca 2+( aq) + H 3O +( aq) 
D)  Ca(OH) 2( s) 
E)  CaH 2( s) + O 2( g) F) B) and D)
G) A) and D)

Question 19

Nitric acid, HNO3

Accepted Answer

A)  is a strong reducing agent.
B)  is a weak oxidizing agent.
C)  does not react with copper metal.
D)  may react with copper metal to produce NO gas.
E)  reacts with metal hydroxides to produce nitrite salts.F) A) and B)
G) A) and C)

Question 20

The halogens act as oxidizing agents in most of their reactions.

Accepted Answer

A) True 
 B)False

Exam 14: Periodic Patterns in the Main-Group Elements

Predict the products for the following set of reactants. Ca3As2(s) + H2O(l) →

Correct AnswerverifiedShow Answer

Which of the following oxides will give the most acidic solution when dissolved in water?

Correct AnswerverifiedShow Answer

Silicon halides have stronger bonds than corresponding carbon halides. Which of the following is a possible explanation of this phenomenon?

Correct AnswerverifiedShow Answer

Which of the following substances is produced when lithium metal reacts with oxygen gas?

Correct AnswerverifiedShow Answer

Predict the products for the reaction of the following set of reactants. CaO(s) + H2O(l) →

Correct AnswerverifiedShow Answer

Unlike the remainder of the Group 1A(1) elements, lithium forms many salts that have some covalent bond character. What is a reason for this behavior?

Correct AnswerverifiedShow Answer

Which element forms compounds that are involved in smog and acid rain?

Correct AnswerverifiedShow Answer

Which of the following oxides will be the most acidic?

Correct AnswerverifiedShow Answer

Carbon monoxide's toxicity is related to its ability to bond to iron in hemoglobin.

Correct AnswerverifiedShow Answer

Nitric acid, HNO3

Correct AnswerverifiedShow Answer

Dinitrogen monoxide, N2O, is

Correct AnswerverifiedShow Answer

Predict the products for the following set of reactants. Li(s) + H2O(l) →

Correct AnswerverifiedShow Answer

Predict the products for the following set of reactants. H2O(l) + ClF5(l) →

Correct AnswerverifiedShow Answer

Which of the following has the most allotropes?

Correct AnswerverifiedShow Answer

Ozone is both a pollutant and a natural component of the atmosphere.

Correct AnswerverifiedShow Answer

Elements of group 1A have higher melting and boiling points than those of group 2A.

Correct AnswerverifiedShow Answer

Most of the alkali metal salts are soluble in water while many alkaline earth salts have very low solubilities. Why is this so?

Correct AnswerverifiedShow Answer

The halogens act as oxidizing agents in most of their reactions.

Correct AnswerverifiedShow Answer

Predict the products formed from the following set of reactants. FeSe(s) + HCl(aq) →

Correct AnswerverifiedShow Answer

Predict the products for the reaction of the following set of reactants. Sr(s) + H2O(l) →

Correct AnswerverifiedShow Answer

Predict the products for the following set of reactants. Ca₃As₂(s) + H₂O(l) →

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Predict the products for the reaction of the following set of reactants. CaO(s) + H₂O(l) →

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Nitric acid, HNO₃

Correct Answer
verified

Dinitrogen monoxide, N₂O, is

Correct Answer
verified

Predict the products for the following set of reactants. Li(s) + H₂O(l) →

Correct Answer
verified

Predict the products for the following set of reactants. H₂O(l) + ClF₅(l) →

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Predict the products for the reaction of the following set of reactants. Sr(s) + H₂O(l) →

Correct Answer
verified