Question 1

What is the correct name for Cl2O7?

Accepted Answer

A)  dichlorine heptoxide. 
B)  chlorine oxide. 
C)  dichloride heptoxide. 
D)  dichlorine heptaoxygen. 
E)  chlorine heptaoxygen. 
A)  dichlorine heptoxide. 
B)  chlorine oxide. 
C)  dichloride heptoxide. 
D)  dichlorine heptaoxygen. 
E)  chlorine heptaoxygen. A

Question 2

What is the molecular mass of cyclooctane,C8H16?

Accepted Answer

A)  13.02 g/mol 
B)  1553.53 g/mol 
C)  97.10 g/mol 
D)  112.21 g/mol 
E)  28.14 g/mol 
A)  13.02 g/mol 
B)  1553.53 g/mol 
C)  97.10 g/mol 
D)  112.21 g/mol 
E)  28.14 g/mol D

Question 3

What is the formula for the compound which forms between the ammonium and bromide ions?

Accepted Answer

A)  NH3Br 
B)  NH4Br 
C)  NH3Br2 
D)  NH4Br2 
E)  (NH4)2Br 
A)  NH3Br 
B)  NH4Br 
C)  NH3Br2 
D)  NH4Br2 
E)  (NH4)2Br B

Question 4

For a nonmetal in Group 6A of the periodic table,the most common monatomic ion will have a charge of ____.

Accepted Answer

A)  3- 
B)  2- 
C)  1- 
D)  1+ 
E)  2+ 
A)  3- 
B)  2- 
C)  1- 
D)  1+ 
E)  2+

Question 5

The building blocks of atoms (neutrons,protons,and electrons)are called ________ particles.

Accepted Answer

The answer of The building blocks of atoms (neutrons,protons,and electrons)are...

Question 6

What is the correct name for Ca(CH3CO2)2?

Accepted Answer

A)  calcium(II)carbonate 
B)  calcium carbonate 
C)  calcium acetate 
D)  acetic calcide 
E)  calcium carbonide 
A)  calcium(II)carbonate 
B)  calcium carbonate 
C)  calcium acetate 
D)  acetic calcide 
E)  calcium carbonide

Question 7

If 1.00 g of an unknown molecular compound contains 8.35 $\times$ 1021 molecules,what is its molar mass?

Accepted Answer

A)  44.0 g/mol 
B)  66.4 g/mol 
C)  72.1 g/mol 
D)  98.1 g/mol 
E)  132 g/mol 
A)  44.0 g/mol 
B)  66.4 g/mol 
C)  72.1 g/mol 
D)  98.1 g/mol 
E)  132 g/mol

Question 8

The correct name for Co2+ is

Accepted Answer

A)  monocobalt ion. 
B)  cobalt(II)ion. 
C)  cobalt ion. 
D)  cobalt(I)ion. 
E)  cobalt. 
A)  monocobalt ion. 
B)  cobalt(II)ion. 
C)  cobalt ion. 
D)  cobalt(I)ion. 
E)  cobalt.

Question 9

What is the atomic symbol for an element that has 30 neutrons and a mass number of 55?

Accepted Answer

A)  At 
B)  Zn 
C)  Co 
D)  Mn 
E)  Cs 
A)  At 
B)  Zn 
C)  Co 
D)  Mn 
E)  Cs

Question 10

A certain element consists of two stable isotopes.The first has a mass of 14.0031 amu and a percent natural abundance of 99.63%.The second has a mass of 15.001 amu and a percent natural abundance of 0.37%.What is the atomic weight of the element?

Accepted Answer

A)  13.95 u 
B)  14.00 u 
C)  14.01 u 
D)  14.50 u 
E)  19.50 u 
A)  13.95 u 
B)  14.00 u 
C)  14.01 u 
D)  14.50 u 
E)  19.50 u

Question 11

How many protons,neutrons,and electrons are in a neutral atom of 55Fe?

Accepted Answer

A)  26 protons,29 neutrons,55 electrons 
B)  26 protons,29 neutrons,29 electrons 
C)  26 protons,29 neutrons,26 electrons 
D)  55 protons,26 neutrons,55 electrons 
E)  55 protons,26 neutrons,26 electrons 
A)  26 protons,29 neutrons,55 electrons 
B)  26 protons,29 neutrons,29 electrons 
C)  26 protons,29 neutrons,26 electrons 
D)  55 protons,26 neutrons,55 electrons 
E)  55 protons,26 neutrons,26 electrons

Question 12

Elements that have the same number of protons,but differ in their number of neutrons are called ________.

Accepted Answer

The answer of Elements that have the same number of...

Question 13

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 cadmium. 
E)  It is in group 8B. 
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 cadmium. 
E)  It is in group 8B.

Question 14

Two isotopes of a given element will have the same number of ____,but a different number of ____ in their nucleus.

Accepted Answer

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

Question 15

Oxygen and ________ are the two most abundant elements in the Earth's crust.

Accepted Answer

The answer of Oxygen and ________ are the two most...

Question 16

Lithium has two naturally occurring isotopes,6Li and 7Li .The atomic weight of lithium is 6.941.Which of the following statements concerning the relative abundance of each isotope is correct?

Accepted Answer

A)  The abundance of 7Li is greater than 6Li. 
B)  The abundance of 7Li is less than 6Li. 
C)  The abundance of 6Li is equal to the abundance of 7Li. 
D)  Not enough data is provided to determine the correct answer. 
E)  Based on the atomic mass,only 7Li occurs naturally. 
A)  The abundance of 7Li is greater than 6Li. 
B)  The abundance of 7Li is less than 6Li. 
C)  The abundance of 6Li is equal to the abundance of 7Li. 
D)  Not enough data is provided to determine the correct answer. 
E)  Based on the atomic mass,only 7Li occurs naturally.

Question 17

What is the correct name for CCl4?

Accepted Answer

A)  carbon chlorine 
B)  tetracarbon chloride 
C)  carbon tetrachloride 
D)  carbon(IV)chloride 
E)  tetrachlorocarbide 
A)  carbon chlorine 
B)  tetracarbon chloride 
C)  carbon tetrachloride 
D)  carbon(IV)chloride 
E)  tetrachlorocarbide

Question 18

The numerical quantity of a mole,6.022 $\times$ 1023,is defined as the number of atoms in a specific mass of an element.What is the mass and the identity of the element used to define one mole?

Accepted Answer

A mole is equal to t

Question 19

A molecule is found to contain 47.35% by mass C,10.60% by mass H,and 42.05% by mass O.What is the empirical formula for this molecule?

Accepted Answer

A)  C2H6O 
B)  C3H4O 
C)  C3H8O2 
D)  C4H6O2 
E)  C4H8O3 
A)  C2H6O 
B)  C3H4O 
C)  C3H8O2 
D)  C4H6O2 
E)  C4H8O3

Question 20

What element is in the fourth period in Group 3A?

Accepted Answer

A)  Sb 
B)  Ga 
C)  In 
D)  Si 
E)  Tl 
A)  Sb 
B)  Ga 
C)  In 
D)  Si 
E)  Tl

Exam 3: Atoms, molecules, and Ions

What is the correct name for Cl2O7?

What is the molecular mass of cyclooctane,C8H16?

What is the formula for the compound which forms between the ammonium and bromide ions?

For a nonmetal in Group 6A of the periodic table,the most common monatomic ion will have a charge of ____.

The building blocks of atoms (neutrons,protons,and electrons)are called ________ particles.

What is the correct name for Ca(CH3CO2)2?

If 1.00 g of an unknown molecular compound contains 8.35 ×\times× 1021 molecules,what is its molar mass?

The correct name for Co2+ is

What is the atomic symbol for an element that has 30 neutrons and a mass number of 55?

A certain element consists of two stable isotopes.The first has a mass of 14.0031 amu and a percent natural abundance of 99.63%.The second has a mass of 15.001 amu and a percent natural abundance of 0.37%.What is the atomic weight of the element?

How many protons,neutrons,and electrons are in a neutral atom of 55Fe?

Elements that have the same number of protons,but differ in their number of neutrons are called ________.

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

Two isotopes of a given element will have the same number of ____,but a different number of ____ in their nucleus.

Oxygen and ________ are the two most abundant elements in the Earth's crust.

Lithium has two naturally occurring isotopes,6Li and 7Li .The atomic weight of lithium is 6.941.Which of the following statements concerning the relative abundance of each isotope is correct?

What is the correct name for CCl4?

The numerical quantity of a mole,6.022 ×\times× 1023,is defined as the number of atoms in a specific mass of an element.What is the mass and the identity of the element used to define one mole?

A molecule is found to contain 47.35% by mass C,10.60% by mass H,and 42.05% by mass O.What is the empirical formula for this molecule?

What element is in the fourth period in Group 3A?

Basic Concepts of Chemistry

Mathlets Review: The Tools of Quantitative Chemistry

Chemical Reactions

Stoichiometry: Quantitative Information About Chemical Reactions

Principles of Chemical Reactivity: Energy and Chemical Reactions

The Structure of Atoms

The Structure of Atoms and Periodic Trends

Bonding and Molecular Structure

Bonding and Molecular Structure: Orbital Hybridization and Molecular Orbitals

Gases and Their Properties

Intermolecular Forces and Liquids

The Chemistry of Solids

Solutions and Their Behavior

Chemical Kinetics: the Rates of Chemical Reactions

Principles of Reactivity: Chemical Equilibria

The Chemistry of Acids and Bases

Principles of Reactivity: Other Aspects of Aqueous Equilibria

Entropy and Free Energy

Principles of Reactivity: Electron Transfer Reactions

Environmental Chemistry Earths Environment,energy,and Sustainability

The Chemistry of the Main Group Elements

The Chemistry of the Transition Elements

Carbon: Not Just Another Element

Biochemistry

Nuclear Chemistry

Filters

What is the correct name for Cl₂O₇?

What is the molecular mass of cyclooctane,C₈H₁₆?

What is the correct name for Ca(CH₃CO₂)₂?

If 1.00 g of an unknown molecular compound contains 8.35 $\times$ 10²¹ molecules,what is its molar mass?

The correct name for Co²⁺ is

How many protons,neutrons,and electrons are in a neutral atom of ⁵⁵Fe?

Two isotopes of a given element will have the same number of ,but a different number of in their nucleus.

Lithium has two naturally occurring isotopes,⁶Li and ⁷Li .The atomic weight of lithium is 6.941.Which of the following statements concerning the relative abundance of each isotope is correct?

What is the correct name for CCl₄?

The numerical quantity of a mole,6.022 $\times$ 10²³,is defined as the number of atoms in a specific mass of an element.What is the mass and the identity of the element used to define one mole?