Question 1

An aqueous solution of H2S is named

Accepted Answer

A) hydrosulfuric acid. 
B) hydrosulfurous acid. 
C) sulfuric acid. 
D) sulfurous acid. 
A) hydrosulfuric acid. 
B) hydrosulfurous acid. 
C) sulfuric acid. 
D) sulfurous acid.

Question 2

The chemical formula for lithium peroxide is

Accepted Answer

A) LiOH. 
B) LiO2. 
C) Li2O. 
D) Li2O2. 
A) LiOH. 
B) LiO2. 
C) Li2O. 
D) Li2O2.

Question 3

How many protons (p)and neutrons (n)are in an atom of  
?

Accepted Answer

A) 38 p,52 n 
B) 38 p,90 n 
C) 52 p,38 n 
D) 90 p,38 n 
A) 38 p,52 n 
B) 38 p,90 n 
C) 52 p,38 n 
D) 90 p,38 n

Question 4

Give the molecular formula corresponding to the following ball-and-stick molecular representation of naphthalene (gray = C,unshaded = H).In writing the formula,list the atoms in alphabetical order.

Accepted Answer

A) CH 
B) C5H4 
C) C10H8 
D) C10H10 
A) CH 
B) C5H4 
C) C10H8 
D) C10H10

Question 5

Which of the following drawings represents a collection of acetylene (C2H2)molecules? The shaded spheres represent carbon atoms and the unshaded spheres represent hydrogen atoms.

Accepted Answer

A) drawing (a) 
B) drawing (b) 
C) drawing (c) 
D) drawing (d) 
A) drawing (a) 
B) drawing (b) 
C) drawing (c) 
D) drawing (d)

Question 6

When more than 3000 known nuclides are plotted on a neutron/proton grid they make up a group called

Accepted Answer

A) the "island of stability." 
B) the "peninsula of nuclear stability." 
C) the "sea of instability." 
D) none of these 
A) the "island of stability." 
B) the "peninsula of nuclear stability." 
C) the "sea of instability." 
D) none of these

Question 7

What is the chemical formula for strontium hydroxide?

Accepted Answer

A) SrH2 
B) SrOH 
C) SrOH2 
D) Sr(OH)2 
A) SrH2 
B) SrOH 
C) SrOH2 
D) Sr(OH)2

Question 8

-Which of the above drawings represents an Ar atom?

Accepted Answer

A) drawing (a) 
B) drawing (b) 
C) drawing (c) 
D) drawing (d) 
A) drawing (a) 
B) drawing (b) 
C) drawing (c) 
D) drawing (d)

Question 9

The observation that 15.0 g of hydrogen reacts with 120.0 g of oxygen to form 135.0 g of water is evidence for the law of

Accepted Answer

A) definite proportions. 
B) energy conservation. 
C) mass conservation. 
D) multiple proportions. 
A) definite proportions. 
B) energy conservation. 
C) mass conservation. 
D) multiple proportions.

Question 10

Which of the following statements concerning ionic compounds is true?

Accepted Answer

A) Essentially all ionic compounds are solids at room temperature and pressure. 
B) Ionic compounds do not contain any covalent bonds. 
C) Ionic compounds contain the same number of positive ions as negative ions. 
D) The chemical formula for an ionic compound must show a nonzero net charge. 
A) Essentially all ionic compounds are solids at room temperature and pressure. 
B) Ionic compounds do not contain any covalent bonds. 
C) Ionic compounds contain the same number of positive ions as negative ions. 
D) The chemical formula for an ionic compound must show a nonzero net charge.

Question 11

The solid compound,Na2CO3,contains

Accepted Answer

A) Na+,C4+,and O2- ions. 
B) Na+ ions and CO32-ions. 
C) Na2+ and CO32- ions. 
D) Na2CO3 molecules. 
A) Na+,C4+,and O2- ions. 
B) Na+ ions and CO32-ions. 
C) Na2+ and CO32- ions. 
D) Na2CO3 molecules.

Question 12

What is the chemical formula for iron( III)sulfate?

Accepted Answer

A) Fe3S 
B) Fe3SO4 
C) Fe2S3 
D) Fe2( SO4)3 
A) Fe3S 
B) Fe3SO4 
C) Fe2S3 
D) Fe2( SO4)3

Question 13

The chemical formula for calcium nitride is

Accepted Answer

A) Ca(NO3)2. 
B) Ca(NO2)2. 
C) Ca3N2. 
D) CaN2. 
A) Ca(NO3)2. 
B) Ca(NO2)2. 
C) Ca3N2. 
D) CaN2.

Question 14

What type of bonding is found in the compound PCl5?

Accepted Answer

A) covalent bonding 
B) hydrogen bonding 
C) ionic bonding 
D) metallic bonding 
A) covalent bonding 
B) hydrogen bonding 
C) ionic bonding 
D) metallic bonding

Question 15

-What kind of decay process is occurring in the decay of isotope B to isotope C in the figure shown above?

Accepted Answer

A) α emission 
B) β emission 
C) γ emission 
D) electron capture or positron emission 
A) α emission 
B) β emission 
C) γ emission 
D) electron capture or positron emission

Question 16

Crude oil is an example of

Accepted Answer

A) a compound. 
B) an element. 
C) a heterogeneous mixture. 
D) a homogeneous mixture. 
A) a compound. 
B) an element. 
C) a heterogeneous mixture. 
D) a homogeneous mixture.

Question 17

The current model of the atom in which essentially all of an atom's mass is contained in a very small nucleus,whereas most of an atom's volume is due to the space in which the atom's electrons move was established by

Accepted Answer

A) Millikan's oil drop experiment. 
B) Rutherford's gold foil experiment. 
C) Thomson's cathode ray tube experiment. 
D) None of these 
A) Millikan's oil drop experiment. 
B) Rutherford's gold foil experiment. 
C) Thomson's cathode ray tube experiment. 
D) None of these

Question 18

If shaded and unshaded spheres represent atoms of different elements,as shown in drawing (1),which combination of drawings (2)-(4)represent the law of multiple proportions?

Accepted Answer

A) only drawings (2)and (3) 
B) only drawings (2)and (4) 
C) only drawings (3)and (4) 
D) drawings (2),(3),and (4) 
A) only drawings (2)and (3) 
B) only drawings (2)and (4) 
C) only drawings (3)and (4) 
D) drawings (2),(3),and (4)

Question 19

The mass number of an atom is equal to the number of

Accepted Answer

A) electrons. 
B) neutrons. 
C) protons. 
D) protons plus neutrons. 
A) electrons. 
B) neutrons. 
C) protons. 
D) protons plus neutrons.

Question 20

Tell the type of decay process occurring in the following nuclear reaction.

Accepted Answer

A) α emission 
B) β emission 
C) γ emission 
D) electron capture or positron emission 
A) α emission 
B) β emission 
C) γ emission 
D) electron capture or positron emission

Exam 2: Atoms, molecules, and Ions

An aqueous solution of H2S is named

The chemical formula for lithium peroxide is

How many protons (p)and neutrons (n)are in an atom of ?

Give the molecular formula corresponding to the following ball-and-stick molecular representation of naphthalene (gray = C,unshaded = H).In writing the formula,list the atoms in alphabetical order.

Which of the following drawings represents a collection of acetylene (C2H2)molecules? The shaded spheres represent carbon atoms and the unshaded spheres represent hydrogen atoms.

When more than 3000 known nuclides are plotted on a neutron/proton grid they make up a group called

What is the chemical formula for strontium hydroxide?

-Which of the above drawings represents an Ar atom?

The observation that 15.0 g of hydrogen reacts with 120.0 g of oxygen to form 135.0 g of water is evidence for the law of

Which of the following statements concerning ionic compounds is true?

The solid compound,Na2CO3,contains

What is the chemical formula for iron( III)sulfate?

The chemical formula for calcium nitride is

What type of bonding is found in the compound PCl5?

-What kind of decay process is occurring in the decay of isotope B to isotope C in the figure shown above?

Crude oil is an example of

The current model of the atom in which essentially all of an atom's mass is contained in a very small nucleus,whereas most of an atom's volume is due to the space in which the atom's electrons move was established by

If shaded and unshaded spheres represent atoms of different elements,as shown in drawing (1),which combination of drawings (2)-(4)represent the law of multiple proportions?

The mass number of an atom is equal to the number of

Tell the type of decay process occurring in the following nuclear reaction.

Chemistry: Matter and Measurement

Formulas, equations, and Moles

Reactions in Aqueous Solutions

Periodicity and the Atomic Structure of Atoms

Ionic Bonds and Some Main-Group Chemistry

Covalent Bonds and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids,solids,and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Hydrogen, oxygen, and Water

The Main-Group Elements

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

Nuclear Chemistry

Organic and Biological Chemistry

Filters

An aqueous solution of H₂S is named

Which of the following drawings represents a collection of acetylene (C₂H₂)molecules? The shaded spheres represent carbon atoms and the unshaded spheres represent hydrogen atoms.

The solid compound,Na₂CO_3,contains

What type of bonding is found in the compound PCl₅?