Question 1

Which of the following statements is not true about the element iron?

Accepted Answer

A) It is a metal. 
B) It is a transition element. 
C) It is in period 4. 
D) It has chemical and physical properties most similar to zirconium. 
E) It is in group VIIIB (group 8). 
A) It is a metal. 
B) It is a transition element. 
C) It is in period 4. 
D) It has chemical and physical properties most similar to zirconium. 
E) It is in group VIIIB (group 8).

Question 2

Which of the following about the isotopes of a particular element is not true?

Accepted Answer

A) Each unique isotope has a different atomic mass. 
B) Each unique isotope has a different atomic number. 
C) Each unique isotope has a different number of neutrons. 
D) Each unique isotope has the same number of protons. 
E) In neutral atoms of each unique isotope,the number of electrons equals the number of protons. 
A) Each unique isotope has a different atomic mass. 
B) Each unique isotope has a different atomic number. 
C) Each unique isotope has a different number of neutrons. 
D) Each unique isotope has the same number of protons. 
E) In neutral atoms of each unique isotope,the number of electrons equals the number of protons.

Question 3

Which of the following is not a correct name-symbol combination?

Accepted Answer

A) gallium,Ga 
B) iron,Fe 
C) nitrogen,N 
D) argon,Ar 
E) sodium,He 
A) gallium,Ga 
B) iron,Fe 
C) nitrogen,N 
D) argon,Ar 
E) sodium,He

Question 4

All the following ions have the same charge except

Accepted Answer

A) sulfate. 
B) dichromate. 
C) chlorate. 
D) sulfide. 
E) sulfite. 
A) sulfate. 
B) dichromate. 
C) chlorate. 
D) sulfide. 
E) sulfite.

Question 5

Which nuclide has the same number of protons as   ?

Accepted Answer

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

Question 6

If two different nuclides have the same mass number,it must mean that

Accepted Answer

A) the combined number of protons and neutrons are the same. 
B) both have the same number of neutrons. 
C) both have the same number of electrons. 
D) both have the same number of protons. 
E) they are isotopes. 
A) the combined number of protons and neutrons are the same. 
B) both have the same number of neutrons. 
C) both have the same number of electrons. 
D) both have the same number of protons. 
E) they are isotopes.

Question 7

How many neutrons are there in​ 8 molecules of   ?

Accepted Answer

A) ​160 
B) ​80 
C) ​3 
D) ​304 
E) ​144 
A) ​160 
B) ​80 
C) ​3 
D) ​304 
E) ​144

Question 8

The elements in groups 1A-8A or 1-2 and 15-18 are known as the

Accepted Answer

A) main group. 
B) metalloids or semimetals. 
C) halogens. 
D) transition metals. 
E) inner transition metals. 
A) main group. 
B) metalloids or semimetals. 
C) halogens. 
D) transition metals. 
E) inner transition metals.

Question 9

Which of the following chemical equations is not balanced?

Accepted Answer

A) NH4NO3 → N2O + 2H2O 
B) C12H22O11 → 12C + 11H2O 
C) 2NH4SCN + Ba(OH)2 • 8H2O → 2NH3 + 10H2O + Ba(SCN)2 
D) (NH4)2Cr2O7 → N2O + Cr2O3 + 4H2O 
E) 2Mg + CO2 → 2MgO + C 
A) NH4NO3 → N2O + 2H2O 
B) C12H22O11 → 12C + 11H2O 
C) 2NH4SCN + Ba(OH)2 • 8H2O → 2NH3 + 10H2O + Ba(SCN)2 
D) (NH4)2Cr2O7 → N2O + Cr2O3 + 4H2O 
E) 2Mg + CO2 → 2MgO + C

Question 10

Which of the following lists gives the atomic symbols for potassium,magnesium,beryllium,and sodium?

Accepted Answer

A) Po,Mn,Br,Na 
B) P,Mn,Be,Se 
C) K,Mg,Be,Na 
D) Pt,Mg,Be,Sc 
E) K,Mn,Br,Na 
A) Po,Mn,Br,Na 
B) P,Mn,Be,Se 
C) K,Mg,Be,Na 
D) Pt,Mg,Be,Sc 
E) K,Mn,Br,Na

Question 11

The nucleus of a 191Ir nuclide contains

Accepted Answer

A) 191 neutrons and 268 electrons. 
B) 77 protons and 191 neutrons. 
C) 191 protons and 114 electrons. 
D) 191 protons,77 neutrons,and 191 electrons. 
E) 77 protons and 114 neutrons. 
A) 191 neutrons and 268 electrons. 
B) 77 protons and 191 neutrons. 
C) 191 protons and 114 electrons. 
D) 191 protons,77 neutrons,and 191 electrons. 
E) 77 protons and 114 neutrons.

Question 12

If two different nuclides have the same atomic number,it must mean that

Accepted Answer

A) they have the same atomic mass. 
B) they have the same mass number. 
C) they have the same number of protons. 
D) they have the same number of electrons. 
E) they have the same number of neutrons. 
A) they have the same atomic mass. 
B) they have the same mass number. 
C) they have the same number of protons. 
D) they have the same number of electrons. 
E) they have the same number of neutrons.

Question 13

Choose the name-formula pair that does not match.

Accepted Answer

A) calcium hydride,CaH2 
B) ammonium hydrogen carbonate,NH4CO3 
C) sodium chlorite,NaClO2 
D) calcium hydroxide,Ca(OH)2 
E) nitric acid,HNO3 
A) calcium hydride,CaH2 
B) ammonium hydrogen carbonate,NH4CO3 
C) sodium chlorite,NaClO2 
D) calcium hydroxide,Ca(OH)2 
E) nitric acid,HNO3

Question 14

Which of the following statements is true about one formula unit of RuF2?

Accepted Answer

A) It is composed of one Ru atom and one F2 molecule. 
B) It is composed of one Ru atom and two F atoms. 
C) It is composed of one Ru2+ ion and one F22- ion. 
D) It is composed of one RuF2 molecule. 
E) It is composed of one Ru2+ ion and two F- ions. 
A) It is composed of one Ru atom and one F2 molecule. 
B) It is composed of one Ru atom and two F atoms. 
C) It is composed of one Ru2+ ion and one F22- ion. 
D) It is composed of one RuF2 molecule. 
E) It is composed of one Ru2+ ion and two F- ions.

Question 15

An atom that has the same number of neutrons as   is

Accepted Answer

A) (58Zn). 
B) (60Cu). 
C)    . 
D)    . 
E) (59Co). 
A) (58Zn). 
B) (60Cu). 
C)    . 
D)    . 
E) (59Co).

Question 16

Sulfuric acid reacts with aqueous sodium hydroxide to produce aqueous sodium sulfate and liquid water.Which is the correct balanced chemical equation for this reaction description?

Accepted Answer

A) H2SO4(aq)+ 2NaOH(aq)→ Na2S(aq)+ 2H2O(l)+ 2O2(g) 
B) H2S(aq)+ 2NaOH(aq)→ Na2S(aq)+ 2H2O(l) 
C) H2SO4(aq)+ NaOH(aq)→ NaSO4(aq)+ H2O(g) 
D) H2SO4(aq)+ 2NaOH(aq)→ Na2SO4(aq)+ 2H2O(l) 
E) H2SO4(aq)+ (NaOH)2(aq)→ Na2SO4(aq)+ 2H2O(l) 
A) H2SO4(aq)+ 2NaOH(aq)→ Na2S(aq)+ 2H2O(l)+ 2O2(g) 
B) H2S(aq)+ 2NaOH(aq)→ Na2S(aq)+ 2H2O(l) 
C) H2SO4(aq)+ NaOH(aq)→ NaSO4(aq)+ H2O(g) 
D) H2SO4(aq)+ 2NaOH(aq)→ Na2SO4(aq)+ 2H2O(l) 
E) H2SO4(aq)+ (NaOH)2(aq)→ Na2SO4(aq)+ 2H2O(l)

Question 17

Which metals form cations with varying positive charges?

Accepted Answer

A) many transition metals 
B) Zn and Al 
C) Group 1 metals 
D) Group 1 and Group 2 metals 
E) Group 2 metals 
A) many transition metals 
B) Zn and Al 
C) Group 1 metals 
D) Group 1 and Group 2 metals 
E) Group 2 metals

Question 18

A sample of the mineral troegerite,(UO2)3(AsO4)2 • 12H2O,has 1.34 × 1021 U atoms.How many arsenic atoms are present in this sample of troegerite?

Accepted Answer

A) 2.01 × 1022 
B) 1.61 × 1022 
C) 2.68 × 1021 
D) 6.70 × 1022 
E) 8.93 × 1020 
A) 2.01 × 1022 
B) 1.61 × 1022 
C) 2.68 × 1021 
D) 6.70 × 1022 
E) 8.93 × 1020

Question 19

What is the correct name for Ga2S3?

Accepted Answer

A) indium(III)sulfide 
B) indium sulfide 
C) diindium trisulfide 
D) indium trisulfide 
E) diindium(II)sulfide 
A) indium(III)sulfide 
B) indium sulfide 
C) diindium trisulfide 
D) indium trisulfide 
E) diindium(II)sulfide

Question 20

The species that is formed when a molecule gains or loses an electron is called

Accepted Answer

A) an ion. 
B) a metalloid. 
C) an isotope. 
D) an atom. 
E) a metal. 
A) an ion. 
B) a metalloid. 
C) an isotope. 
D) an atom. 
E) a metal.

Exam 2: Atoms, molecules, and Ions

Which of the following statements is not true about the element iron?

Which of the following about the isotopes of a particular element is not true?

Which of the following is not a correct name-symbol combination?

All the following ions have the same charge except

Which nuclide has the same number of protons as ?

If two different nuclides have the same mass number,it must mean that

How many neutrons are there in​ 8 molecules of ?

The elements in groups 1A-8A or 1-2 and 15-18 are known as the

Which of the following chemical equations is not balanced?

Which of the following lists gives the atomic symbols for potassium,magnesium,beryllium,and sodium?

The nucleus of a 191Ir nuclide contains

If two different nuclides have the same atomic number,it must mean that

Choose the name-formula pair that does not match.

Which of the following statements is true about one formula unit of RuF2?

An atom that has the same number of neutrons as is

Sulfuric acid reacts with aqueous sodium hydroxide to produce aqueous sodium sulfate and liquid water.Which is the correct balanced chemical equation for this reaction description?

Which metals form cations with varying positive charges?

A sample of the mineral troegerite,(UO2)3(AsO4)2 • 12H2O,has 1.34 × 1021 U atoms.How many arsenic atoms are present in this sample of troegerite?

What is the correct name for Ga2S3?

The species that is formed when a molecule gains or loses an electron is called

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

How many neutrons are there in 8 molecules of ?

The nucleus of a ¹⁹¹Ir nuclide contains

Which of the following statements is true about one formula unit of RuF₂?

A sample of the mineral troegerite,(UO₂)₃(AsO₄)₂ • 12H₂O,has 1.34 × 10²¹ U atoms.How many arsenic atoms are present in this sample of troegerite?

What is the correct name for Ga₂S₃?