Question 1

Describe the difference between an empirical formula and a molecular formula.

Accepted Answer

An empirical formula is the simplest che

Question 2

What is the electrostatic attraction called that holds oppositely charged ions together in a compound?

Accepted Answer

The answer of What is the electrostatic attraction called that...

Question 3

The elements in Group 1A are called the ________.

Accepted Answer

The answer of The elements in Group 1A are called...

Question 4

The molecular formula is a whole number multiple of the empirical formula.

Accepted Answer

A) True 
 B)False

Question 5

What is the name of Cu2O?

Accepted Answer

Question 6

The formula for magnesium sulfate is

Accepted Answer

A) MnS. 
B) MgS. 
C) MnSO3. 
D) MgSO4. 
E) MnSO4. 
A) MnS. 
B) MgS. 
C) MnSO3. 
D) MgSO4. 
E) MnSO4.

Question 7

The elements in Group 8A are called the ________.

Accepted Answer

The answer of The elements in Group 8A are called...

Question 8

The compound,P4S10,is used in the manufacture of safety matches.What is its name?

Accepted Answer

A) phosphorus sulfide 
B) phosphoric sulfide 
C) phosphorus decasulfide 
D) tetraphosphorus decasulfide 
E) phosphorus sulfite 
A) phosphorus sulfide 
B) phosphoric sulfide 
C) phosphorus decasulfide 
D) tetraphosphorus decasulfide 
E) phosphorus sulfite

Question 9

The chemical name for SO32- (aq)is sulfite ion.Therefore,the chemical name of H2SO3 (aq)is

Accepted Answer

A) dihydrosulfuric acid. 
B) sulfurous acid. 
C) dihydrogen sulfite. 
D) hyposulfurous acid. 
E) sulfuric acid. 
A) dihydrosulfuric acid. 
B) sulfurous acid. 
C) dihydrogen sulfite. 
D) hyposulfurous acid. 
E) sulfuric acid.

Question 10

Which of these scientists developed the nuclear model of the atom?

Accepted Answer

A) John Dalton 
B) Robert Millikan 
C) J.J.Thomson 
D) Henry Moseley 
E) Ernest Rutherford 
A) John Dalton 
B) Robert Millikan 
C) J.J.Thomson 
D) Henry Moseley 
E) Ernest Rutherford

Question 11

Which of these compounds is most likely to be ionic?

Accepted Answer

A) KF 
B) CCl4 
C) CS2 
D) CO2 
E) ICl 
A) KF 
B) CCl4 
C) CS2 
D) CO2 
E) ICl

Question 12

A row of the periodic table is called a(n)

Accepted Answer

A) group. 
B) period. 
C) isotopic mixture. 
D) family. 
E) subshell. 
A) group. 
B) period. 
C) isotopic mixture. 
D) family. 
E) subshell.

Question 13

What is the formula for the ionic compound formed by calcium and selenium?

Accepted Answer

A) CaSe 
B) Ca2Se 
C) CaSe2 
D) Ca3Se 
E) CaSe3 
A) CaSe 
B) Ca2Se 
C) CaSe2 
D) Ca3Se 
E) CaSe3

Question 14

Which one of the following formulas of ionic compounds is the least likely to be correct?

Accepted Answer

A) NH4Cl 
B) Ba(OH)2 
C) Na2SO4 
D) Ca2NO3 
E) Cu(CN)2 
A) NH4Cl 
B) Ba(OH)2 
C) Na2SO4 
D) Ca2NO3 
E) Cu(CN)2

Question 15

The elements in Group 7A are called the ________.

Accepted Answer

The answer of The elements in Group 7A are called...

Question 16

The elements in Group 2A are known by what name?

Accepted Answer

A) Transition metals 
B) Halogens 
C) Alkali metals 
D) Alkaline earth metals 
E) Noble gases 
A) Transition metals 
B) Halogens 
C) Alkali metals 
D) Alkaline earth metals 
E) Noble gases

Question 17

Why was it more difficult to design an experiment that would prove the existence of neutrons than it was to design an experiment that would prove the existence of either protons or electrons?

Accepted Answer

A) Neutrons are smaller than either protons or electrons,so their presence is much more difficult to detect. 
B) Because neutrons are 1840 times heavier than protons,they are difficult to separate,and therefore,to count. 
C) Neutrons do not deflect charged particles. 
D) The similarity of the magnetic and electrical properties of protons and neutrons made them experimentally indistinguishable. 
A) Neutrons are smaller than either protons or electrons,so their presence is much more difficult to detect. 
B) Because neutrons are 1840 times heavier than protons,they are difficult to separate,and therefore,to count. 
C) Neutrons do not deflect charged particles. 
D) The similarity of the magnetic and electrical properties of protons and neutrons made them experimentally indistinguishable.

Question 18

Which isotope is not possible?

Accepted Answer

A)    
B)    
C)    
D)    
E) All of these isotopes are possible. 
A)    
B)    
C)    
D)    
E) All of these isotopes are possible.

Question 19

Which of the following is a nonmetal?

Accepted Answer

A) Lithium,Li,Z = 3 
B) Bromine,Br,Z = 35 
C) Mercury,Hg,Z = 80 
D) Bismuth,Bi,Z = 83 
E) Sodium,Na,Z = 11 
A) Lithium,Li,Z = 3 
B) Bromine,Br,Z = 35 
C) Mercury,Hg,Z = 80 
D) Bismuth,Bi,Z = 83 
E) Sodium,Na,Z = 11

Question 20

Which of these elements is chemically similar to oxygen?

Accepted Answer

A) Sulfur 
B) Calcium 
C) Iron 
D) Nickel 
E) Potassium 
A) Sulfur 
B) Calcium 
C) Iron 
D) Nickel 
E) Potassium

Exam 2: Atoms Molecules and Ions

Describe the difference between an empirical formula and a molecular formula.

What is the electrostatic attraction called that holds oppositely charged ions together in a compound?

The elements in Group 1A are called the ________.

The molecular formula is a whole number multiple of the empirical formula.

What is the name of Cu2O?

The formula for magnesium sulfate is

The elements in Group 8A are called the ________.

The compound,P4S10,is used in the manufacture of safety matches.What is its name?

The chemical name for SO32- (aq)is sulfite ion.Therefore,the chemical name of H2SO3 (aq)is

Which of these scientists developed the nuclear model of the atom?

Which of these compounds is most likely to be ionic?

A row of the periodic table is called a(n)

What is the formula for the ionic compound formed by calcium and selenium?

Which one of the following formulas of ionic compounds is the least likely to be correct?

The elements in Group 7A are called the ________.

The elements in Group 2A are known by what name?

Why was it more difficult to design an experiment that would prove the existence of neutrons than it was to design an experiment that would prove the existence of either protons or electrons?

Which isotope is not possible?

Which of the following is a nonmetal?

Which of these elements is chemically similar to oxygen?

Chemistry: the Central Science

Stoichiometry Ratios of Combination

Reactions in Aqueous Solutions

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Electron Configuration and the Periodic Table

Chemical Bonding I Basic Concepts

Chemical Bonding Ii Molecular Geometry and Bonding Theories

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Modern Materials

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Environmental Chemistry

Coordination Chemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Organic Chemistry

Filters

What is the name of Cu₂O?

The compound,P₄S₁₀,is used in the manufacture of safety matches.What is its name?

The chemical name for SO₃^2- (aq)is sulfite ion.Therefore,the chemical name of H₂SO₃ (aq)is