Question 1

Given the following diagram,describe what happens electronically between these two molecules.

Accepted Answer

A) Oxygen A becomes slightly positively charged due to the protons on the water molecule. 
B) Oxygen B becomes slightly positively charged due to the protons on the water molecule. 
C) Oxygen A becomes slightly negatively charged due to the oxygen molecule. 
D) Hydrogens on oxygen W becomes slightly positively charged due to the oxygen molecule. 
E) none of the above 
A) Oxygen A becomes slightly positively charged due to the protons on the water molecule. 
B) Oxygen B becomes slightly positively charged due to the protons on the water molecule. 
C) Oxygen A becomes slightly negatively charged due to the oxygen molecule. 
D) Hydrogens on oxygen W becomes slightly positively charged due to the oxygen molecule. 
E) none of the above

Question 2

Which of the above substances would have the largest dipole?

Accepted Answer

A) a 
B) b 
C) c 
D) Each has the same size dipole. 
E) None of the molecules has a dipole. 
A) a 
B) b 
C) c 
D) Each has the same size dipole. 
E) None of the molecules has a dipole.

Question 3

What is the compound that forms if you react potassium and sulfur?

Accepted Answer

A) K2S 
B) KS 
C) SP 
D) PS2 
E) SkP 
A) K2S 
B) KS 
C) SP 
D) PS2 
E) SkP

Question 4

Which of the following is the weakest?

Accepted Answer

A) a chemical bond 
B) an ion-dipole attraction 
C) a dipole-dipole attraction 
D) a dipole-induced dipole attraction 
E) an induced dipole-induced dipole attraction 
A) a chemical bond 
B) an ion-dipole attraction 
C) a dipole-dipole attraction 
D) a dipole-induced dipole attraction 
E) an induced dipole-induced dipole attraction

Question 5

Which of the following statements is untrue?

Accepted Answer

A) Covalent molecules are never crystalline. 
B) Covalent molecules usually have low melting points. 
C) Covalent molecules can have nonbonding electrons. 
D) Covalent bonds can involve more than one pair of electrons. 
E) All of the above statements are true. 
A) Covalent molecules are never crystalline. 
B) Covalent molecules usually have low melting points. 
C) Covalent molecules can have nonbonding electrons. 
D) Covalent bonds can involve more than one pair of electrons. 
E) All of the above statements are true.

Question 6

Which of the following elements has six valence electrons?

Accepted Answer

A) Be 
B) B 
C) C 
D) N 
E) O 
A) Be 
B) B 
C) C 
D) N 
E) O

Question 7

Which of the following is NOT an ion?

Accepted Answer

A) H+1 
B) Br- 
C) O2 
D) Mg+2 
E) NO3- 
A) H+1 
B) Br- 
C) O2 
D) Mg+2 
E) NO3-

Question 8

Which of the following molecules would contain a dipole?

Accepted Answer

A) H-F 
B) Cl-Cl 
C) H-H 
D) F-F 
E) all of the above 
A) H-F 
B) Cl-Cl 
C) H-H 
D) F-F 
E) all of the above

Question 9

Which of the following elements will most likely form an ion with a +2 charge?

Accepted Answer

A) Na 
B) Mg 
C) Ne 
D) Si 
E) Cl 
A) Na 
B) Mg 
C) Ne 
D) Si 
E) Cl

Question 10

If you mix a typical iodine ion (I,atomic no.= 53)with a typical barium ion (Ba,atomic no.= 56),what compound is formed?

Accepted Answer

A) BaI2 
B) BaI 
C) Ba56I53 
D) Ba2I 
E) Ba2I2 
A) BaI2 
B) BaI 
C) Ba56I53 
D) Ba2I 
E) Ba2I2

Question 11

Chlorine, $\mathrm { Cl } _ { 2 }$ ,is a gas at room temperature,but bromine, $\mathrm { Br } _ { 2 }$ ,is a liquid.Explain.

Accepted Answer

A) Chlorine atoms are larger and this makes the formation of induced dipole-induced dipole attractions more favorable. 
B) Bromine atoms are larger and this makes the formation of induced dipole-induced dipole attractions more favorable. 
C) The smaller chlorine molecules are able to pack together in a tighter physical orientation. 
D) The bromine ions are held together by ionic bonds. 
A) Chlorine atoms are larger and this makes the formation of induced dipole-induced dipole attractions more favorable. 
B) Bromine atoms are larger and this makes the formation of induced dipole-induced dipole attractions more favorable. 
C) The smaller chlorine molecules are able to pack together in a tighter physical orientation. 
D) The bromine ions are held together by ionic bonds.

Question 12

Which of the following describes an aqueous solution?

Accepted Answer

A) a mixture of some compound dissolved in water 
B) a mixture of polar molecules dissolved in a nonpolar solvent 
C) a mixture of water dispersed in an ionic compound 
D) a mixture of nonpolar molecules dissolved in a polar solvent 
E) none of the above 
A) a mixture of some compound dissolved in water 
B) a mixture of polar molecules dissolved in a nonpolar solvent 
C) a mixture of water dispersed in an ionic compound 
D) a mixture of nonpolar molecules dissolved in a polar solvent 
E) none of the above

Question 13

Which is more polar,a sulfur-bromine (S-Br)bond or a selenium-chlorine (Se-Cl)bond?

Accepted Answer

A) A selenium-chlorine bond should be more polar because of a greater difference in effective nuclear charge. 
B) A selenium-chlorine bond should be more polar because of a smaller difference in effective nuclear charge. 
C) A sulfur-bromine bond should be more polar because of a greater difference in effective nuclear charge. 
D) A sulfur-bromine bond should be more polar because of a smaller difference in effective nuclear charge. 
A) A selenium-chlorine bond should be more polar because of a greater difference in effective nuclear charge. 
B) A selenium-chlorine bond should be more polar because of a smaller difference in effective nuclear charge. 
C) A sulfur-bromine bond should be more polar because of a greater difference in effective nuclear charge. 
D) A sulfur-bromine bond should be more polar because of a smaller difference in effective nuclear charge.

Question 14

What it the main difference between an ionic and a covalent bond?

Accepted Answer

A) One is the sharing of a pair of electrons,the other is the transfer of at least one electron. 
B) One involves electrons,the other does not involve any electrons. 
C) The electrons in both types of bonding undergo an exchange. 
D) The electrons are traded between the two atoms and this keeps the atoms close. 
E) Both bonds are the same,but named different to describe different atoms involved. 
A) One is the sharing of a pair of electrons,the other is the transfer of at least one electron. 
B) One involves electrons,the other does not involve any electrons. 
C) The electrons in both types of bonding undergo an exchange. 
D) The electrons are traded between the two atoms and this keeps the atoms close. 
E) Both bonds are the same,but named different to describe different atoms involved.

Question 15

Which of the following would have the highest boiling point?

Accepted Answer

A) Cl2 
B) Br2 
C) F2 
D) I2 
E) not enough information given 
A) Cl2 
B) Br2 
C) F2 
D) I2 
E) not enough information given

Question 16

Why are ores so valuable?

Accepted Answer

A) They are sources of naturally occurring gold. 
B) Metals can be efficiently extracted from them. 
C) They tend to occur in scenic mountainous regions. 
D) They hold many clues to Earth's natural history. 
A) They are sources of naturally occurring gold. 
B) Metals can be efficiently extracted from them. 
C) They tend to occur in scenic mountainous regions. 
D) They hold many clues to Earth's natural history.

Question 17

Which of the following is a positive ion?

Accepted Answer

A) Na+1 
B) Ca+2 
C) Mg+2 
D) Al+3 
E) all of the above 
A) Na+1 
B) Ca+2 
C) Mg+2 
D) Al+3 
E) all of the above

Question 18

List the following compounds in order of increasing boiling point: $\mathrm { Cl } _ { 4 }$ , $\mathrm { CBr } _ { 4 }$ , $\mathrm { CCl } _ { 4 }$ , $\mathrm { CF } _ { 4 }$ .

Accepted Answer

A)  $\mathrm { Cl } _ { 4 }$ , $\mathrm { CBr } _ { 4 }$ , $\mathrm { CCl } _ { 4 }$ , $\mathrm { CF } _ { 4 }$ 
B)  $\mathrm { CF } _ { 4 }$ , $\mathrm { CBr } _ { 4 }$ , $\mathrm { CCl } _ { 4 }$ , $\mathrm { Cl } _ { 4 }$ 
C)  $\mathrm { Cl } _ { 4 }$ , $\mathrm { CCl } _ { 4 }$ ,    $\mathrm { CBr } _ { 4 }$ , $\mathrm { CF } _ { 4 }$ 
D)  $\mathrm { CF } _ { 4 }$ ,    $\mathrm { CCl } _ { 4 }$ , $\mathrm { CBr } _ { 4 }$ , $\mathrm { Cl } _ { 4 }$ 
A)  $\mathrm { Cl } _ { 4 }$ , $\mathrm { CBr } _ { 4 }$ , $\mathrm { CCl } _ { 4 }$ , $\mathrm { CF } _ { 4 }$ 
B)  $\mathrm { CF } _ { 4 }$ , $\mathrm { CBr } _ { 4 }$ , $\mathrm { CCl } _ { 4 }$ , $\mathrm { Cl } _ { 4 }$ 
C)  $\mathrm { Cl } _ { 4 }$ , $\mathrm { CCl } _ { 4 }$ ,    $\mathrm { CBr } _ { 4 }$ , $\mathrm { CF } _ { 4 }$ 
D)  $\mathrm { CF } _ { 4 }$ ,    $\mathrm { CCl } _ { 4 }$ , $\mathrm { CBr } _ { 4 }$ , $\mathrm { Cl } _ { 4 }$

Question 19

What is a hydrogen bond?

Accepted Answer

A) a special type of dipole-dipole attraction involving hydrogen bound to a highly electronegative atom 
B) a special type of dipole-dipole attraction involving hydrogen bound to any other atom 
C) a special type of dipole-dipole attraction involving hydrogen bound to another hydrogen atom 
D) a special type of attraction involving any molecules that contain hydrogens 
E) none of the above 
A) a special type of dipole-dipole attraction involving hydrogen bound to a highly electronegative atom 
B) a special type of dipole-dipole attraction involving hydrogen bound to any other atom 
C) a special type of dipole-dipole attraction involving hydrogen bound to another hydrogen atom 
D) a special type of attraction involving any molecules that contain hydrogens 
E) none of the above

Question 20

Which of the following is the correct electron dot structure for chlorine (atomic no.= 17)?

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) e 
A) a 
B) b 
C) c 
D) d 
E) e

Exam 15: How Atoms Bond and Molecules Attract

Given the following diagram,describe what happens electronically between these two molecules.

Which of the above substances would have the largest dipole?

What is the compound that forms if you react potassium and sulfur?

Which of the following is the weakest?

Which of the following statements is untrue?

Which of the following elements has six valence electrons?

Which of the following is NOT an ion?

Which of the following molecules would contain a dipole?

Which of the following elements will most likely form an ion with a +2 charge?

If you mix a typical iodine ion (I,atomic no.= 53)with a typical barium ion (Ba,atomic no.= 56),what compound is formed?

Chlorine, Cl2\mathrm { Cl } _ { 2 }Cl2​ ,is a gas at room temperature,but bromine, Br2\mathrm { Br } _ { 2 }Br2​ ,is a liquid.Explain.

Which of the following describes an aqueous solution?

Which is more polar,a sulfur-bromine (S-Br)bond or a selenium-chlorine (Se-Cl)bond?

What it the main difference between an ionic and a covalent bond?

Which of the following would have the highest boiling point?

Why are ores so valuable?

Which of the following is a positive ion?

List the following compounds in order of increasing boiling point: Cl4\mathrm { Cl } _ { 4 }Cl4​ , CBr4\mathrm { CBr } _ { 4 }CBr4​ , CCl4\mathrm { CCl } _ { 4 }CCl4​ , CF4\mathrm { CF } _ { 4 }CF4​ .

What is a hydrogen bond?

Which of the following is the correct electron dot structure for chlorine (atomic no.= 17)?

Patterns of Motion and Equilibrium

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

Thermal Energy and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Light

Atoms and the Periodic Table

The Atomic Nucleus and Radioactivity

Elements of Chemistry

Mixtures

How Chemicals React

Two Classes of Chemical Reactions

Organic Compounds

Rocks and Minerals

Plate Tectonics and Earths Interior

Shaping Earths Surface

Geologic Time - Reading the Rock Record

The Oceans, Atmosphere, and Climatic Effects

Driving Forces of Weather

The Solar System

Stars and Galaxies

The Structure of Space and Time

Prologue: The Nature of Science

Filters

Chlorine, $\mathrm { Cl } _ { 2 }$ ,is a gas at room temperature,but bromine, $\mathrm { Br } _ { 2 }$ ,is a liquid.Explain.

List the following compounds in order of increasing boiling point: $\mathrm { Cl } _ { 4 }$ , $\mathrm { CBr } _ { 4 }$ , $\mathrm { CCl } _ { 4 }$ , $\mathrm { CF } _ { 4 }$ .