Question 1

Which one of the following lists gives the correct symbols for the elements phosphorus,potassium,silver,chlorine,and sulfur?

Accepted Answer

A) P,Po,Ag,Cl,S 
B) K,Ag,Po,Cl,S 
C) P,K,Ag,Cl,S 
D) Ph,K,Ag,S,Cl 
E) Ph,Po,Ag,Cl,S 
A) P,Po,Ag,Cl,S 
B) K,Ag,Po,Cl,S 
C) P,K,Ag,Cl,S 
D) Ph,K,Ag,S,Cl 
E) Ph,Po,Ag,Cl,S

Question 2

Lithium has two naturally occurring isotopes,6Li and 7Li .The average atomic mass of lithium is 6.941.Which of the following statements concerning the relative abundance of each isotope is correct?

Accepted Answer

A) The abundance of 7Li is greater than 6Li. 
B) The abundance of 7Li is less than 6Li. 
C) The abundance of 6Li is equal to the abundance of 7Li. 
D) Not enough data is provided to determine the correct answer. 
E) Based on the atomic mass,only 7Li occurs naturally. 
A) The abundance of 7Li is greater than 6Li. 
B) The abundance of 7Li is less than 6Li. 
C) The abundance of 6Li is equal to the abundance of 7Li. 
D) Not enough data is provided to determine the correct answer. 
E) Based on the atomic mass,only 7Li occurs naturally.

Question 3

The formulas of the carbonate ion,the ammonium ion,and the chlorate ion are represented,respectively,as

Accepted Answer

A) CO32-,NH2-,ClO3-. 
B) CO32-,NH4+,ClO3-. 
C) CO2-,NH4+,ClO-. 
D) P3-,NH3+,ClO2-. 
E) CO32-,NH3+,ClO2-. 
A) CO32-,NH2-,ClO3-. 
B) CO32-,NH4+,ClO3-. 
C) CO2-,NH4+,ClO-. 
D) P3-,NH3+,ClO2-. 
E) CO32-,NH3+,ClO2-.

Question 4

If the Thomson model of the atom had been correct,Rutherford would have observed

Accepted Answer

A) alpha particles bouncing off the foil. 
B) alpha particles going through the foil with little or no deflection. 
C) alpha particles greatly deflected by the metal foil. 
D) positive particles formed in the foil. 
E) None of the above observations is consistent with the Thomson model of the atom. 
A) alpha particles bouncing off the foil. 
B) alpha particles going through the foil with little or no deflection. 
C) alpha particles greatly deflected by the metal foil. 
D) positive particles formed in the foil. 
E) None of the above observations is consistent with the Thomson model of the atom.

Question 5

Energy from the following reaction provided the lift for the moon lander:
__ (CH3)2N2H2 + __ N2O4 → __ N2 + __ H2O + __ CO2
When the equation is balanced,the smallest whole-number coefficient of nitrogen is

Accepted Answer

A) 5. 
B) 4. 
C) 1. 
D) 3. 
E) 2. 
A) 5. 
B) 4. 
C) 1. 
D) 3. 
E) 2.

Question 6

The formulas of the hydroxide ion,the nitrate ion,and the phosphate ion are represented,respectively,as

Accepted Answer

A) OH-,NO2-,PO33-. 
B) OH-,NO2-,PO43-. 
C) H-,NO2-,P3-. 
D) H-,NO3-,P3-. 
E) OH-,NO3-,PO43-. 
A) OH-,NO2-,PO33-. 
B) OH-,NO2-,PO43-. 
C) H-,NO2-,P3-. 
D) H-,NO3-,P3-. 
E) OH-,NO3-,PO43-.

Question 7

Which of the following is the atomic symbol for the element cobalt?

Accepted Answer

A) CO 
B) Co 
C) C 
D) co 
E) All of the above 
A) CO 
B) Co 
C) C 
D) co 
E) All of the above

Question 8

Which of the following represents a known ion?

Accepted Answer

A) S2+ 
B) Sc4+ 
C) Sn2+ 
D) P4- 
E) Na- 
A) S2+ 
B) Sc4+ 
C) Sn2+ 
D) P4- 
E) Na-

Question 9

The mass spectrum of an element with two naturally occurring isotopes is shown below.What is the best estimate of the element's atomic mass?

Accepted Answer

A) 10 amu 
B) 11 amu 
C) 10.8 amu 
D) 10.2 amu 
E) 10.5 amu 
A) 10 amu 
B) 11 amu 
C) 10.8 amu 
D) 10.2 amu 
E) 10.5 amu

Question 10

The correct name for Zn2+ is

Accepted Answer

A) monozinc ion. 
B) zinc ion. 
C) zinc(2)ion. 
D) zinc(I)ion. 
E) zinc. 
A) monozinc ion. 
B) zinc ion. 
C) zinc(2)ion. 
D) zinc(I)ion. 
E) zinc.

Question 11

The chemical name for the binary,non-ionic molecule with the formula HI is

Accepted Answer

A) hydrogen iodide. 
B) monohydrogen iodide. 
C) hydride iodide. 
D) hydrogen iodine. 
E) monohydrogen iodine. 
A) hydrogen iodide. 
B) monohydrogen iodide. 
C) hydride iodide. 
D) hydrogen iodine. 
E) monohydrogen iodine.

Question 12

A subatomic particle is

Accepted Answer

A) a piece of an atom. 
B) only found in the nucleus of an atom. 
C) always positively charged. 
D) larger than the nucleus of an atom. 
E) always negatively charged. 
A) a piece of an atom. 
B) only found in the nucleus of an atom. 
C) always positively charged. 
D) larger than the nucleus of an atom. 
E) always negatively charged.

Question 13

Which of the following nuclides contains more protons than neutrons?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 14

What is the formula of calcium nitrite?

Accepted Answer

A) Ca(NO2)2 
B) Ca3N2 
C) Ca2(NO2)2 
D) Ca2N3 
E) Ca(NO2)3 
A) Ca(NO2)2 
B) Ca3N2 
C) Ca2(NO2)2 
D) Ca2N3 
E) Ca(NO2)3

Question 15

What is the correct formula for manganese(III)oxide?

Accepted Answer

A) MnO 
B) Mn2O 
C) Mn3O2 
D) Mn2O3 
E) MnO2 
A) MnO 
B) Mn2O 
C) Mn3O2 
D) Mn2O3 
E) MnO2

Question 16

The complete combustion of propane,C3H8,yields carbon dioxide and water:
- C3 H8 + - O2→ - CO2 +  - H2O
The smallest whole-number coefficient of oxygen in the balanced equation is

Accepted Answer

A) 6. 
B) 3. 
C) 7. 
D) 4. 
E) 5. 
A) 6. 
B) 3. 
C) 7. 
D) 4. 
E) 5.

Question 17

Which of the following equations is not balanced?

Accepted Answer

A) 2Sb2OS2 + 10O2 → 2Sb2O5 + 4SO3 
B) (NH4)2Cr2O7 → N2 + 4H2O + Cr2O3 
C) C12H22O11 + 12O2 → 12CO2 + 11H2O 
D) 2NaCl + Pb(NO3)2 → PbCl2 + 2NaNO3 
E) Fe3O4 + 3CO → 3Fe + 3CO2 
A) 2Sb2OS2 + 10O2 → 2Sb2O5 + 4SO3 
B) (NH4)2Cr2O7 → N2 + 4H2O + Cr2O3 
C) C12H22O11 + 12O2 → 12CO2 + 11H2O 
D) 2NaCl + Pb(NO3)2 → PbCl2 + 2NaNO3 
E) Fe3O4 + 3CO → 3Fe + 3CO2

Question 18

A 2.0-g sample of washing soda,Na2CO3 • 10H2O,has   carbon atoms.How many oxygen atoms are present in 2.0g of washing soda?

Accepted Answer

A)    
B) ​   
C) ​   
D) ​   
E) ​   
A)    
B) ​   
C) ​   
D) ​   
E) ​

Question 19

Which of the following elements has the largest atomic mass?

Accepted Answer

A) hafnium 
B) nickel 
C) mercury 
D) argon 
E) carbon 
A) hafnium 
B) nickel 
C) mercury 
D) argon 
E) carbon

Question 20

Which of the following pairs of compounds can be used to illustrate the law of multiple proportions?

Accepted Answer

A) H2O and HCl 
B) NO and NO2 
C) NH4 and NH4Cl 
D) ZnO2 and ZnCl2 
E) CH4 and CO2 
A) H2O and HCl 
B) NO and NO2 
C) NH4 and NH4Cl 
D) ZnO2 and ZnCl2 
E) CH4 and CO2

Exam 2: Atoms, molecules, and Ions

Which one of the following lists gives the correct symbols for the elements phosphorus,potassium,silver,chlorine,and sulfur?

Lithium has two naturally occurring isotopes,6Li and 7Li .The average atomic mass of lithium is 6.941.Which of the following statements concerning the relative abundance of each isotope is correct?

The formulas of the carbonate ion,the ammonium ion,and the chlorate ion are represented,respectively,as

If the Thomson model of the atom had been correct,Rutherford would have observed

Energy from the following reaction provided the lift for the moon lander: __ (CH3)2N2H2 + __ N2O4 → __ N2 + __ H2O + __ CO2 When the equation is balanced,the smallest whole-number coefficient of nitrogen is

The formulas of the hydroxide ion,the nitrate ion,and the phosphate ion are represented,respectively,as

Which of the following is the atomic symbol for the element cobalt?

Which of the following represents a known ion?

The mass spectrum of an element with two naturally occurring isotopes is shown below.What is the best estimate of the element's atomic mass?

The correct name for Zn2+ is

The chemical name for the binary,non-ionic molecule with the formula HI is

A subatomic particle is

Which of the following nuclides contains more protons than neutrons?

What is the formula of calcium nitrite?

What is the correct formula for manganese(III)oxide?

The complete combustion of propane,C3H8,yields carbon dioxide and water: - C3 H8 + - O2→ - CO2 + - H2O The smallest whole-number coefficient of oxygen in the balanced equation is

Which of the following equations is not balanced?

A 2.0-g sample of washing soda,Na2CO3 • 10H2O,has carbon atoms.How many oxygen atoms are present in 2.0g of washing soda?

Which of the following elements has the largest atomic mass?

Which of the following pairs of compounds can be used to illustrate the law of multiple proportions?

Chemistry and Measurement

Calculations With Chemical Formulas and Equations

Chemical Reactions

The Gaseous State

Thermochemistry

Quantum Theory of the Atom

Electron Configurations and Periodicity

Ionic and Covalent Bonding

Molecular Geometry and Chemical Bonding Theory

States of Matter; Liquids and Solids

Solutions

Rates of Reaction

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria

Solubility and Complex-Ion Equilibria

Thermodynamics and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry of the Main-Group Metals

The Transition Elements and Coordination Compounds

Organic Chemistry

Polymer Materials: Synthetic and Biological

Filters

Lithium has two naturally occurring isotopes,⁶Li and ⁷Li .The average atomic mass of lithium is 6.941.Which of the following statements concerning the relative abundance of each isotope is correct?

Energy from the following reaction provided the lift for the moon lander: (CH₃)₂N₂H₂ + N₂O₄ → N₂ + H₂O + __ CO₂ When the equation is balanced,the smallest whole-number coefficient of nitrogen is

The correct name for Zn²⁺ is

The complete combustion of propane,C₃H₈,yields carbon dioxide and water: _- C₃H₈+ _- O₂→ _- CO_{2 +}_- H₂O The smallest whole-number coefficient of oxygen in the balanced equation is

A 2.0-g sample of washing soda,Na₂CO₃ • 10H₂O,has carbon atoms.How many oxygen atoms are present in 2.0g of washing soda?