Question 1

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 2

-Which of the above drawings represents a Ca2+ ion?

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 3

According to the law of multiple proportions,if 12 g of carbon combine with 16 g of oxygen to form CO,the number of grams of carbon that combine with 16 g of oxygen in the formation of CO2 is ________.

Accepted Answer

Question 4

According to history,the concept that all matter is composed of atoms was first proposed by

Accepted Answer

A) the Greek philosopher Democritus,but not widely accepted until modern times. 
B) Dalton,but not widely accepted until the work of Mendeleev. 
C) Dalton,but not widely accepted until the work of Einstein. 
D) Dalton,and widely accepted within a few decades. 
A) the Greek philosopher Democritus,but not widely accepted until modern times. 
B) Dalton,but not widely accepted until the work of Mendeleev. 
C) Dalton,but not widely accepted until the work of Einstein. 
D) Dalton,and widely accepted within a few decades.

Question 5

The chemical formula for the sulfite ion is

Accepted Answer

A) S-. 
B) S2-. 
C) SO32-. 
D) SO42-. 
A) S-. 
B) S2-. 
C) SO32-. 
D) SO42-.

Question 6

10% saline solution (sodium chloride dissolved in water)is an example of a ________ mixture.

Accepted Answer

The answer of 10% saline solution (sodium chloride dissolved in...

Question 7

Which one of the following combinations of neutrons/protons results in the lowest number of nonradioactive (stable)isotopes?

Accepted Answer

A) even number protons/even number neutrons 
B) even number protons/odd number neutrons 
C) odd number protons/even number neutrons 
D) odd number protons/odd number neutrons 
A) even number protons/even number neutrons 
B) even number protons/odd number neutrons 
C) odd number protons/even number neutrons 
D) odd number protons/odd number neutrons

Question 8

Which statement about nuclear reactions is true?

Accepted Answer

A) New elements are never produced in a nuclear reaction. 
B) Nuclear reactions involve valence electrons. 
C) The rate of a nuclear reaction is affected by catalysts. 
D) Tremendous amounts of energy are involved in nuclear reactions. 
A) New elements are never produced in a nuclear reaction. 
B) Nuclear reactions involve valence electrons. 
C) The rate of a nuclear reaction is affected by catalysts. 
D) Tremendous amounts of energy are involved in nuclear reactions.

Question 9

How many electrons are in the ion,P3-?

Accepted Answer

A) 12 
B) 18 
C) 28 
D) 34 
A) 12 
B) 18 
C) 28 
D) 34

Question 10

Which of the following is the correct chemical formula for a molecule of bromine?

Accepted Answer

A) Br 
B) Br- 
C) Br+ 
D) Br2 
A) Br 
B) Br- 
C) Br+ 
D) Br2

Question 11

What is the most likely charge on an ion of phosphorus,P?

Accepted Answer

A) 5- 
B) 3- 
C) 3+ 
D) 5+ 
A) 5- 
B) 3- 
C) 3+ 
D) 5+

Question 12

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

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 13

The element antimony has an atomic weight of 121.757 amu and only two naturally-occurring isotopes.One isotope has an abundance of 57.3% and an isotopic mass of 120.904 amu.Based on these data,what is the mass of the other isotope?

Accepted Answer

A) 121.757 amu 
B) 122.393 amu 
C) 122.610 amu 
D) 122.902 amu 
A) 121.757 amu 
B) 122.393 amu 
C) 122.610 amu 
D) 122.902 amu

Question 14

In the reaction HBr + NaOH → H2O + NaBr,If 81 g HBr react with 40 g of NaOH to produce 18 g of H2O,the number of grams of NaBr produced is ________.

Accepted Answer

Question 15

Which of the following drawings depicts a chemical reaction consistent with Dalton's atomic theory?

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 16

Which of the following figures represents  
? Unshaded spheres represent neutrons and shaded spheres represent protons.

Accepted Answer

A) figure (1) 
B) figure (2) 
C) figure (3) 
D) figure (4) 
A) figure (1) 
B) figure (2) 
C) figure (3) 
D) figure (4)

Question 17

Which of the following drawings depicts a chemical reaction consistent with Dalton's atomic theory?

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

By analogy with the oxoanions of sulfur,H2TeO3 would be named

Accepted Answer

A) hydrotellurous acid. 
B) pertelluric acid. 
C) telluric acid. 
D) tellurous acid. 
A) hydrotellurous acid. 
B) pertelluric acid. 
C) telluric acid. 
D) tellurous acid.

Question 19

What nuclide is formed when  
Undergoes a portion of the decay series: alpha,beta,beta,alpha,alpha,alpha.

Accepted Answer

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

Question 20

Which of the following nuclides is most likely to undergo beta decay?

Accepted Answer

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

Exam 2: Atoms, molecules, and Ions

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

-Which of the above drawings represents a Ca2+ ion?

According to the law of multiple proportions,if 12 g of carbon combine with 16 g of oxygen to form CO,the number of grams of carbon that combine with 16 g of oxygen in the formation of CO2 is ________.

According to history,the concept that all matter is composed of atoms was first proposed by

The chemical formula for the sulfite ion is

10% saline solution (sodium chloride dissolved in water)is an example of a ________ mixture.

Which one of the following combinations of neutrons/protons results in the lowest number of nonradioactive (stable)isotopes?

Which statement about nuclear reactions is true?

How many electrons are in the ion,P3-?

Which of the following is the correct chemical formula for a molecule of bromine?

What is the most likely charge on an ion of phosphorus,P?

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

The element antimony has an atomic weight of 121.757 amu and only two naturally-occurring isotopes.One isotope has an abundance of 57.3% and an isotopic mass of 120.904 amu.Based on these data,what is the mass of the other isotope?

In the reaction HBr + NaOH → H2O + NaBr,If 81 g HBr react with 40 g of NaOH to produce 18 g of H2O,the number of grams of NaBr produced is ________.

Which of the following drawings depicts a chemical reaction consistent with Dalton's atomic theory?

Which of the following figures represents ? Unshaded spheres represent neutrons and shaded spheres represent protons.

Which of the following drawings depicts a chemical reaction consistent with Dalton's atomic theory?

By analogy with the oxoanions of sulfur,H2TeO3 would be named

What nuclide is formed when Undergoes a portion of the decay series: alpha,beta,beta,alpha,alpha,alpha.

Which of the following nuclides is most likely to undergo beta decay?

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 above drawings represents a Ca²⁺ ion?

According to the law of multiple proportions,if 12 g of carbon combine with 16 g of oxygen to form CO,the number of grams of carbon that combine with 16 g of oxygen in the formation of CO₂ is ________.

How many electrons are in the ion,P^3-?

In the reaction HBr + NaOH → H₂O + NaBr,If 81 g HBr react with 40 g of NaOH to produce 18 g of H₂O,the number of grams of NaBr produced is ________.

By analogy with the oxoanions of sulfur,H₂TeO₃ would be named