Question 1

Butyric acid has the structural formula given below.  
What is the molecular or chemical formula for butyric acid?

Accepted Answer

A) CHO 
B) C2H4O 
C) C4H8O2 
D) C5H8O3 
A) CHO 
B) C2H4O 
C) C4H8O2 
D) C5H8O3

Question 2

Which of the compounds,Li3P,PH3,C2H6,IBr3,are ionic compounds?

Accepted Answer

A) only C2H6 
B) only Li3P 
C) Li3P and PH3 
D) PH3,C2H6,and IBr3 
A) only C2H6 
B) only Li3P 
C) Li3P and PH3 
D) PH3,C2H6,and IBr3

Question 3

What are the names of the ions Ba2+,Sn2+,and Se2-?

Accepted Answer

A) barium,tin,and selenium 
B) barium,tin(II),and selenide 
C) barium(II),tin(II),and selenium(II-) 
D) barous,stannous,and selenide 
A) barium,tin,and selenium 
B) barium,tin(II),and selenide 
C) barium(II),tin(II),and selenium(II-) 
D) barous,stannous,and selenide

Question 4

What is the chemical formula for strontium hydride?

Accepted Answer

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

Question 5

Which of the following elements would be expected to be particularly stable?

Accepted Answer

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

Question 6

The term "nucleons" refers to the number of ________ in the atom.

Accepted Answer

A) neutrons 
B) protons 
C) protons and neutrons 
D) protons,neutrons,and electrons 
A) neutrons 
B) protons 
C) protons and neutrons 
D) protons,neutrons,and electrons

Question 7

A radioisotope which is neutron poor and very heavy is most likely to decay by

Accepted Answer

A) alpha emission,electron capture,or positron emission. 
B) only alpha emission. 
C) only electron capture. 
D) only positron emission. 
A) alpha emission,electron capture,or positron emission. 
B) only alpha emission. 
C) only electron capture. 
D) only positron emission.

Question 8

How many electrons are in the ion,CO32-?

Accepted Answer

A) 16 
B) 28 
C) 30 
D) 32 
A) 16 
B) 28 
C) 30 
D) 32

Question 9

The charge-to-mass ratio of an electron 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 10

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

Question 11

A neutral atom with atomic number 5 and mass number 11 contains ________ electrons.

Accepted Answer

The answer of A neutral atom with atomic number 5...

Question 12

Methane and oxygen react to form carbon dioxide and water.What mass of water is formed if 0.80 g of methane reacts with 3.2 g of oxygen to produce 2.2 g of carbon dioxide?

Accepted Answer

A) 1)8 g 
B) 2)2 g 
C) 3)7 g 
D) 4)0 g 
A) 1)8 g 
B) 2)2 g 
C) 3)7 g 
D) 4)0 g

Question 13

In which of the following sets do all species have the same number of protons?

Accepted Answer

A) F-,Ne,Mg2+ 
B) Ge,Se2-,Br- 
C) K+,Rb+,Cs+ 
D) Br,Br-,Br+ 
A) F-,Ne,Mg2+ 
B) Ge,Se2-,Br- 
C) K+,Rb+,Cs+ 
D) Br,Br-,Br+

Question 14

Ammonia 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 15

Use the periodic table below to answer the following questions.  
-In which pair are both formulas of binary fluorides of element C correct?

Accepted Answer

A) CF2 and CF3 
B) CF2 and CF6 
C) CF3 and CF5 
D) CF5 and CF6 
A) CF2 and CF3 
B) CF2 and CF6 
C) CF3 and CF5 
D) CF5 and CF6

Question 16

The symbol that is usually used to represent atomic number is ________.

Accepted Answer

A) A 
B) N 
C) X 
D) Z 
A) A 
B) N 
C) X 
D) Z

Question 17

If unshaded spheres represent sulfur atoms and shaded spheres represent oxygen atoms,which of the following drawings depicts a collection of sulfur trioxide molecules?

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 18

In which set do all elements tend to form cations in binary ionic compounds?

Accepted Answer

A) K,Ga,O 
B) Sr,Ni,Hg 
C) N,P,Bi 
D) O,Br,I 
A) K,Ga,O 
B) Sr,Ni,Hg 
C) N,P,Bi 
D) O,Br,I

Question 19

Use the periodic table below to answer the following questions.  
-Which elements commonly form covalent bonds?

Accepted Answer

A) A and B 
B) A and C 
C) B and D 
D) C and D 
A) A and B 
B) A and C 
C) B and D 
D) C and D

Question 20

Which element can form more than one kind of monatomic ion?

Accepted Answer

A) S 
B) Se 
C) Sn 
D) Sr 
A) S 
B) Se 
C) Sn 
D) Sr

Exam 2: Atoms, molecules, and Ions

Butyric acid has the structural formula given below. What is the molecular or chemical formula for butyric acid?

Which of the compounds,Li3P,PH3,C2H6,IBr3,are ionic compounds?

What are the names of the ions Ba2+,Sn2+,and Se2-?

What is the chemical formula for strontium hydride?

Which of the following elements would be expected to be particularly stable?

The term "nucleons" refers to the number of ________ in the atom.

A radioisotope which is neutron poor and very heavy is most likely to decay by

How many electrons are in the ion,CO32-?

The charge-to-mass ratio of an electron was established by

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

A neutral atom with atomic number 5 and mass number 11 contains ________ electrons.

Methane and oxygen react to form carbon dioxide and water.What mass of water is formed if 0.80 g of methane reacts with 3.2 g of oxygen to produce 2.2 g of carbon dioxide?

In which of the following sets do all species have the same number of protons?

Ammonia is an example of

Use the periodic table below to answer the following questions. -In which pair are both formulas of binary fluorides of element C correct?

The symbol that is usually used to represent atomic number is ________.

If unshaded spheres represent sulfur atoms and shaded spheres represent oxygen atoms,which of the following drawings depicts a collection of sulfur trioxide molecules?

In which set do all elements tend to form cations in binary ionic compounds?

Use the periodic table below to answer the following questions. -Which elements commonly form covalent bonds?

Which element can form more than one kind of monatomic ion?

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

Which of the compounds,Li₃P,PH₃,C₂H₆,IBr₃,are ionic compounds?

What are the names of the ions Ba²⁺,Sn²⁺,and Se^2-?

How many electrons are in the ion,CO₃^2-?