Question 1

Which of the following is a molecular element?

Accepted Answer

A)  barium 
B)  iron 
C)  xenon 
D)  iodine 
E)  sodium 
A)  barium 
B)  iron 
C)  xenon 
D)  iodine 
E)  sodium

Question 2

Give the name for PI3.

Accepted Answer

A)  phosphorus triiodide 
B)  potassium triiodide 
C)  phosphorus(III) iodide 
D)  phosphorus(II) iodide 
E)  phosphorus iodide 
A)  phosphorus triiodide 
B)  potassium triiodide 
C)  phosphorus(III) iodide 
D)  phosphorus(II) iodide 
E)  phosphorus iodide

Question 3

Write a balanced equation to show the reaction of sulfurous acid with lithium hydroxide to form water and lithium sulfite.

Accepted Answer

A)  H2SO4(aq) + LiOH(aq) → H2O(l) + Li2SO4(aq) 
B)  H2SO3(aq) + 2 LiOH(aq) → 2 H2O(l) + Li2SO3(aq) 
C)  HSO3(aq) + LiOH(aq) → H2O(l) + LiSO3(aq) 
D)  HSO4(aq) + LiOH(aq) → H2O(l) + LiSO4(aq) 
E)  H2S(aq) + 2 LiOH(aq) → 2 H2O(l) + Li2S(aq) 
A)  H2SO4(aq) + LiOH(aq) → H2O(l) + Li2SO4(aq) 
B)  H2SO3(aq) + 2 LiOH(aq) → 2 H2O(l) + Li2SO3(aq) 
C)  HSO3(aq) + LiOH(aq) → H2O(l) + LiSO3(aq) 
D)  HSO4(aq) + LiOH(aq) → H2O(l) + LiSO4(aq) 
E)  H2S(aq) + 2 LiOH(aq) → 2 H2O(l) + Li2S(aq)

Question 4

Determine the molecular formula of a compound that has a molar mass of 92.0 g/mol and an empirical formula of NO2.

Accepted Answer

A)  N2O3 
B)  N3O6 
C)  N2O4 
D)  NO2 
E)  N2O5 
A)  N2O3 
B)  N3O6 
C)  N2O4 
D)  NO2 
E)  N2O5

Question 5

Radium phosphate reacts with sulfuric acid to form radium sulfate and phosphoric acid.What is the coefficient for sulfuric acid when the equation is balanced using the lowest,whole-numbered coefficients?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  none of these 
A)  1 
B)  2 
C)  3 
D)  none of these

Question 6

Give the common use for sodium nitrite.

Accepted Answer

A)  inhibitor of bacterial growth 
B)  vinegar 
C)  sugar 
D)  beer 
E)  pepper 
A)  inhibitor of bacterial growth 
B)  vinegar 
C)  sugar 
D)  beer 
E)  pepper

Question 7

Which of the following exists as a polyatomic molecule?

Accepted Answer

A)  neon 
B)  carbon 
C)  phosphorus 
D)  lithium 
E)  argon 
A)  neon 
B)  carbon 
C)  phosphorus 
D)  lithium 
E)  argon

Question 8

Which of the following is the correct chemical formula for a molecule of chlorine?

Accepted Answer

A)  Cl 
B)  Cl- 
C)  Cl+ 
D)  Cl2 
A)  Cl 
B)  Cl- 
C)  Cl+ 
D)  Cl2

Question 9

Aluminum metal reacts with aqueous cobalt(II)nitrate to form aqueous aluminum nitrate and cobalt metal.What is the stoichiometric coefficient for aluminum when the chemical equation is balanced using the lowest,whole-number stoichiometric coefficients?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 10

Give the name for TiCO3.Remember that titanium forms several ions.

Accepted Answer

A)  titanium(II) carbonate 
B)  titanium carbide 
C)  titanium carbonite 
D)  titanium(II) carbonite 
E)  titanium(I) carbonate 
A)  titanium(II) carbonate 
B)  titanium carbide 
C)  titanium carbonite 
D)  titanium(II) carbonite 
E)  titanium(I) carbonate

Question 11

Identify the element that fluorine forms an ionic bond with.

Accepted Answer

A)  carbon 
B)  sodium 
C)  xenon 
D)  phosphorus 
E)  oxygen 
A)  carbon 
B)  sodium 
C)  xenon 
D)  phosphorus 
E)  oxygen

Question 12

Give the correct formula for aluminum sulfate.

Accepted Answer

A)  Al2SO4 
B)  Al(SO4)3 
C)  Al3(SO4)2 
D)  Al2(SO4)3 
A)  Al2SO4 
B)  Al(SO4)3 
C)  Al3(SO4)2 
D)  Al2(SO4)3

Question 13

Identify a carboxylic acid.

Accepted Answer

A)  CH3CH2SCH2CH3 
B)  CH3CH2SH 
C)  CH3CH2COOCH3 
D)  CH3CH2CH2CH3 
E)  CH3COOH 
A)  CH3CH2SCH2CH3 
B)  CH3CH2SH 
C)  CH3CH2COOCH3 
D)  CH3CH2CH2CH3 
E)  CH3COOH

Question 14

Give the structure for sodium chlorate.

Accepted Answer

A)  NaClO 
B)  NaClO2 
C)  NaClO3 
D)  NaClO4 
E)  Na2ClO4 
A)  NaClO 
B)  NaClO2 
C)  NaClO3 
D)  NaClO4 
E)  Na2ClO4

Question 15

Write the formula for the compound formed between rubidium and sulfur.

Accepted Answer

A)  RbS 
B)  RbS2 
C)  Rb2S 
D)  Rb2SO3 
E)  Rb3S2 
A)  RbS 
B)  RbS2 
C)  Rb2S 
D)  Rb2SO3 
E)  Rb3S2

Question 16

Which one of the following contains 52% carbon by mass?

Accepted Answer

A)  C2H2 
B)  CH4 
C)  CH3OCH3 
D)  CO2 
A)  C2H2 
B)  CH4 
C)  CH3OCH3 
D)  CO2

Question 17

Which of the following is a molecular compound?

Accepted Answer

A)  KCN 
B)  LiOH 
C)  BaCl2 
D)  ZnS 
E)  P4O10 
A)  KCN 
B)  LiOH 
C)  BaCl2 
D)  ZnS 
E)  P4O10

Question 18

Describe the difference between an atomic element and a molecular element.

Accepted Answer

Atomic elements exist with a s

Question 19

Which of the following is a molecular compound?

Accepted Answer

A)  CuBr2 
B)  P2O4 
C)  NaNO3 
D)  SrSO3 
E)  RbI 
A)  CuBr2 
B)  P2O4 
C)  NaNO3 
D)  SrSO3 
E)  RbI

Question 20

How many anions are there in 3.50 g of MgBr2?

Accepted Answer

A)  1.14 × 1022 anions 
B)  2.29 × 1022 anions 
C)  3.17 × 1025 anions 
D)  6.34 × 1025 anions 
A)  1.14 × 1022 anions 
B)  2.29 × 1022 anions 
C)  3.17 × 1025 anions 
D)  6.34 × 1025 anions

Exam 3: Molecules,compounds,and Chemical Equations

Which of the following is a molecular element?

Give the name for PI3.

Write a balanced equation to show the reaction of sulfurous acid with lithium hydroxide to form water and lithium sulfite.

Determine the molecular formula of a compound that has a molar mass of 92.0 g/mol and an empirical formula of NO2.

Radium phosphate reacts with sulfuric acid to form radium sulfate and phosphoric acid.What is the coefficient for sulfuric acid when the equation is balanced using the lowest,whole-numbered coefficients?

Give the common use for sodium nitrite.

Which of the following exists as a polyatomic molecule?

Which of the following is the correct chemical formula for a molecule of chlorine?

Aluminum metal reacts with aqueous cobalt(II)nitrate to form aqueous aluminum nitrate and cobalt metal.What is the stoichiometric coefficient for aluminum when the chemical equation is balanced using the lowest,whole-number stoichiometric coefficients?

Give the name for TiCO3.Remember that titanium forms several ions.

Identify the element that fluorine forms an ionic bond with.

Give the correct formula for aluminum sulfate.

Identify a carboxylic acid.

Give the structure for sodium chlorate.

Write the formula for the compound formed between rubidium and sulfur.

Which one of the following contains 52% carbon by mass?

Which of the following is a molecular compound?

Describe the difference between an atomic element and a molecular element.

Which of the following is a molecular compound?

How many anions are there in 3.50 g of MgBr2?

Matter, measurement, and Problem Solving

Atoms and Elements

Chemical Quantities and Aqueous Reactions

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes,valence Bond Theory,

Liquids,solids,and Intermolecular Forces

Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Give the name for PI₃.

Determine the molecular formula of a compound that has a molar mass of 92.0 g/mol and an empirical formula of NO₂.

Give the name for TiCO₃.Remember that titanium forms several ions.

How many anions are there in 3.50 g of MgBr₂?