Question 1

In the compound shown below,how can the bond between carbon and chlorine be described?

Accepted Answer

A) intermolecular 
B) ionic 
C) nonpolar covalent 
D) polar covalent 
E) nonpolar ionic 
A) intermolecular 
B) ionic 
C) nonpolar covalent 
D) polar covalent 
E) nonpolar ionic D

Question 2

What is the name of CuF2 in the Stock system?

Accepted Answer

A) copper(I)fluoride 
B) copper(II)fluorate 
C) copper difluoride 
D) copper fluoride 
E) copper(II)fluoride 
A) copper(I)fluoride 
B) copper(II)fluorate 
C) copper difluoride 
D) copper fluoride 
E) copper(II)fluoride E

Question 3

What is the formula of iron(III)bromide?

Accepted Answer

A) Fe(Br2)3 
B) Fe3Br 
C) Fe3Br3 
D) FeBr3 
E) Fe2Br3 
A) Fe(Br2)3 
B) Fe3Br 
C) Fe3Br3 
D) FeBr3 
E) Fe2Br3 D

Question 4

What term describes a solution of a compound in water that does not conduct an electric current?

Accepted Answer

A) amorphous solution 
B) an electrolyte solution 
C) a nonelectrolyte solution 
D) superconducting solution 
E) isoelectric solution 
A) amorphous solution 
B) an electrolyte solution 
C) a nonelectrolyte solution 
D) superconducting solution 
E) isoelectric solution

Question 5

What is the three-dimensional arrangement of positive and negative ions in an ionic solid called?

Accepted Answer

A) dipole 
B) polyatomic structure 
C) crystal lattice 
D) cubic ionic structure 
E) intermolecular ionic forces 
A) dipole 
B) polyatomic structure 
C) crystal lattice 
D) cubic ionic structure 
E) intermolecular ionic forces

Question 6

What is the proper name for N2O5?

Accepted Answer

A) nitrogen(IV)oxide 
B) dinitrogen pentoxide 
C) nitrogen oxide 
D) nitrate 
E) nitrite 
A) nitrogen(IV)oxide 
B) dinitrogen pentoxide 
C) nitrogen oxide 
D) nitrate 
E) nitrite

Question 7

If the shape of a molecule is tetrahedral,what are the values of the bond angles?

Accepted Answer

A) 90° 
B) 109.5° 
C) 120° 
D) 180° 
E) 90° and 120° 
A) 90° 
B) 109.5° 
C) 120° 
D) 180° 
E) 90° and 120°

Question 8

Molecular compounds usually involve ionic bonding.

Accepted Answer

A) True 
 B)False

Question 9

What is the name of the ion NH4+?

Accepted Answer

A) nitrogen tetrahydrate 
B) nitrogen hydrate 
C) mononitrogen tetrahydrogen 
D) ninhydrin 
E) ammonium 
A) nitrogen tetrahydrate 
B) nitrogen hydrate 
C) mononitrogen tetrahydrogen 
D) ninhydrin 
E) ammonium

Question 10

As a rule,a polar substance will be a good solvent for nonpolar solutes,and vice versa.

Accepted Answer

A) True 
 B)False

Question 11

What is the correct formula of diphosphorus pentoxide?

Accepted Answer

A) P5O2 
B) PO2 
C) P2O4 
D) P2O5 
E) P5O 
A) P5O2 
B) PO2 
C) P2O4 
D) P2O5 
E) P5O

Question 12

At what temperature is a liquid converted into a gas?

Accepted Answer

A) the boiling point of the liquid 
B) the combustion point of the liquid 
C) the flash point of the liquid 
D) the condensation point of the liquid 
E) 100°C 
A) the boiling point of the liquid 
B) the combustion point of the liquid 
C) the flash point of the liquid 
D) the condensation point of the liquid 
E) 100°C

Question 13

Which of the following would NOT describe the Lewis structure of PF3?

Accepted Answer

A) The Lewis structure has a double bond between phosphorus and one of the fluorine atoms. 
B) No resonance structures can be drawn. 
C) The molecule has a lone pair (nonbonding pair)on the central atom. 
D) The Lewis structure has 26 valence electrons. 
E) The Lewis structure is not an exception to the octet rule. 
A) The Lewis structure has a double bond between phosphorus and one of the fluorine atoms. 
B) No resonance structures can be drawn. 
C) The molecule has a lone pair (nonbonding pair)on the central atom. 
D) The Lewis structure has 26 valence electrons. 
E) The Lewis structure is not an exception to the octet rule.

Question 14

In solid NaCl,no molecules of NaCl exist.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following compounds contains a polyatomic ion?

Accepted Answer

A) NaOH 
B) HCl 
C) Ca3N2 
D) MgBr2 
E) NH3  
A) NaOH 
B) HCl 
C) Ca3N2 
D) MgBr2 
E) NH3

Question 16

Which of the following molecules is polar?

Accepted Answer

A) 
  
B) 
$\mathrm { H } - \mathrm { Be } - \mathrm { H }$ 
C) 
  
D) 
  
E) 
  
A) 
  
B) 
$\mathrm { H } - \mathrm { Be } - \mathrm { H }$ 
C) 
  
D) 
  
E)

Question 17

What do the dots in a Lewis symbol represent?

Accepted Answer

A) protons 
B) valence electrons 
C) innermost (core)electrons 
D) the nucleus 
E) mass number 
A) protons 
B) valence electrons 
C) innermost (core)electrons 
D) the nucleus 
E) mass number

Question 18

Which statement about chemical bonds is FALSE?

Accepted Answer

A) The sharing of electrons between two nonmetals results in a covalent bond. 
B) The attraction between oppositely charged ions results in an ionic bond. 
C) The electrons in covalent bonds may be shared equally or unequally between the atoms. 
D) A bond dipole is the separation of charge that results when atoms sharing electrons have different electronegativity values. 
E) A nonpolar covalent bond is one in which electrons are not shared equally between the atoms. 
A) The sharing of electrons between two nonmetals results in a covalent bond. 
B) The attraction between oppositely charged ions results in an ionic bond. 
C) The electrons in covalent bonds may be shared equally or unequally between the atoms. 
D) A bond dipole is the separation of charge that results when atoms sharing electrons have different electronegativity values. 
E) A nonpolar covalent bond is one in which electrons are not shared equally between the atoms.

Question 19

Which properly represents the Lewis structure of hydrogen sulfide,H2S?

Accepted Answer

A) 
$\mathrm { H } - \mathrm { S } - \mathrm { H }$ 
B) 
  
C) 
  
D) 
$\mathrm { H } = \mathrm { S } = \mathrm { H }$ 
E) 
  
A) 
$\mathrm { H } - \mathrm { S } - \mathrm { H }$ 
B) 
  
C) 
  
D) 
$\mathrm { H } = \mathrm { S } = \mathrm { H }$ 
E)

Question 20

How many bonding electrons are in CO2?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 8 
A) 1 
B) 2 
C) 3 
D) 4 
E) 8

Exam 3: Structure and Properties of Ionic and Covalent Compounds

In the compound shown below,how can the bond between carbon and chlorine be described?

What is the name of CuF2 in the Stock system?

What is the formula of iron(III)bromide?

What term describes a solution of a compound in water that does not conduct an electric current?

What is the three-dimensional arrangement of positive and negative ions in an ionic solid called?

What is the proper name for N2O5?

If the shape of a molecule is tetrahedral,what are the values of the bond angles?

Molecular compounds usually involve ionic bonding.

What is the name of the ion NH4+?

As a rule,a polar substance will be a good solvent for nonpolar solutes,and vice versa.

What is the correct formula of diphosphorus pentoxide?

At what temperature is a liquid converted into a gas?

Which of the following would NOT describe the Lewis structure of PF3?

In solid NaCl,no molecules of NaCl exist.

Which of the following compounds contains a polyatomic ion?

Which of the following molecules is polar?

What do the dots in a Lewis symbol represent?

Which statement about chemical bonds is FALSE?

Which properly represents the Lewis structure of hydrogen sulfide,H2S?

How many bonding electrons are in CO2?

Chemistry - Methods and Measurement

The Structure of the Atom and the Periodic Table

Calculations, chemical Changes, and the Chemical Equation

States of Matter: Gases, liquids, and Solids

Solutions

Energy,rate and Equilibrium

Acids and Bases

The Nucleus, radioactivity, and Nuclear Medicine

An Introduction to Organic Chemistry

The Unsaturated Hydrocarbons: Alkenes, alkynes, and Aromatics

Alcohols, phenols, thiols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Carboxylic Acid Derivatives

Amines and Amides

Carbohydrates

Lipids and Their Functions in Biochemical Systems

Protein Structure and Function

Enzymes

Introduction to Molecular Genetics

Carbohydrate Metabolism

Aerobic Respiration and Energy Production

Fatty Acid Metabolism

Filters

What is the name of CuF₂ in the Stock system?

What is the proper name for N₂O₅?

What is the name of the ion NH₄+_?

Which of the following would NOT describe the Lewis structure of PF₃?

Which properly represents the Lewis structure of hydrogen sulfide,H₂S?

How many bonding electrons are in CO₂?