Question 1

What it the main difference between an ionic and a covalent bond?

Accepted Answer

A) One is the sharing of a pair of electrons, the other is the transfer of at least one electron. 
B) One involves electrons, the other does not involve any electrons. 
C) The electrons in both types of bonding undergo an exchange. 
D) The electrons are traded between the two atoms and this keeps the atoms close. 
E) Both bonds are the same, but named different to describe different atoms involved. 
A) One is the sharing of a pair of electrons, the other is the transfer of at least one electron. 
B) One involves electrons, the other does not involve any electrons. 
C) The electrons in both types of bonding undergo an exchange. 
D) The electrons are traded between the two atoms and this keeps the atoms close. 
E) Both bonds are the same, but named different to describe different atoms involved.

Question 2

Which of the following bonds would be the least polar?

Accepted Answer

A) C-F 
B) C-O 
C) C-Cl 
D) C-H 
E) All are equally polar. 
A) C-F 
B) C-O 
C) C-Cl 
D) C-H 
E) All are equally polar.

Question 3

The neon atom tends NOT to gain any additional electrons because

Accepted Answer

A) its nuclear charge is not great enough. 
B) that would result in a positive ion. 
C) of the repulsions they would experience with electrons in the same shell. 
D) there is no more room available in its outermost occupied shell. 
A) its nuclear charge is not great enough. 
B) that would result in a positive ion. 
C) of the repulsions they would experience with electrons in the same shell. 
D) there is no more room available in its outermost occupied shell.

Question 4

How many covalent bonds would the following atom usually form?

Accepted Answer

A) 1 
B) 2 
C) 4 
D) 6 
E) It would tend to form ionic bonds. 
A) 1 
B) 2 
C) 4 
D) 6 
E) It would tend to form ionic bonds.

Question 5

Take money away from your bank account and the bank will show a negative credit. Take an electron away from an atom, however, and the atom shows up positive. Explain.

Accepted Answer

A) Electrons are already negative. Therefore, we know from basic math that subtracting a negative (number)from a neutral (atom), will make the result positive. 
B) Neutral atoms contain identically charged but oppositely signed protons and electrons. Removing one of the negative electrons results in an excess of positively charged protons. 
C) Removing an electron from an atom does not have the atom show up positive. It simply leaves the atom short one electron. 
D) Atoms are constantly exchanging electrons. Having an atom "show up positive" is only an expression indicating that it has taken its turn in the game of electron exchange. 
A) Electrons are already negative. Therefore, we know from basic math that subtracting a negative (number)from a neutral (atom), will make the result positive. 
B) Neutral atoms contain identically charged but oppositely signed protons and electrons. Removing one of the negative electrons results in an excess of positively charged protons. 
C) Removing an electron from an atom does not have the atom show up positive. It simply leaves the atom short one electron. 
D) Atoms are constantly exchanging electrons. Having an atom "show up positive" is only an expression indicating that it has taken its turn in the game of electron exchange.

Question 6

What property of alloys make them ideal for developing new materials?

Accepted Answer

A) The characteristics of the material change depending on how much of each component is present. 
B) Alloys are very rigid and are extremely resistant to chemical decomposition. 
C) The size of the atoms involved is directly related the electrical conductivity. 
D) all of the above 
E) none of the above 
A) The characteristics of the material change depending on how much of each component is present. 
B) Alloys are very rigid and are extremely resistant to chemical decomposition. 
C) The size of the atoms involved is directly related the electrical conductivity. 
D) all of the above 
E) none of the above

Question 7

If the following generic atom were to undergo ionization, what would be the charge of the most likely product?

Accepted Answer

A) +2 
B) -2 
C) -6 
D) +6 
E) would probably not ionize 
A) +2 
B) -2 
C) -6 
D) +6 
E) would probably not ionize

Question 8

Barium ions carry a 2+ charge, and nitrogen ions carry a 3-charge. What would be the chemical formula for the ionic compound barium nitride?

Accepted Answer

A) Ba3N2 
B) Ba2N3 
C) Ba3N4 
D) Ba2N2 
A) Ba3N2 
B) Ba2N3 
C) Ba3N4 
D) Ba2N2

Question 9

What is the compound that forms if you react potassium and sulfur?

Accepted Answer

A) K2S 
B) KS 
C) SP 
D) PS2 
E) SkP 
A) K2S 
B) KS 
C) SP 
D) PS2 
E) SkP

Question 10

Which of the following would have the highest boiling point?

Accepted Answer

A) Cl2 
B) Br2 
C) F2 
D) I2 
E) not enough information given 
A) Cl2 
B) Br2 
C) F2 
D) I2 
E) not enough information given

What it the main difference between an ionic and a covalent bond?

Which of the following bonds would be the least polar?

The neon atom tends NOT to gain any additional electrons because

How many covalent bonds would the following atom usually form?

Take money away from your bank account and the bank will show a negative credit. Take an electron away from an atom, however, and the atom shows up positive. Explain.

What property of alloys make them ideal for developing new materials?

If the following generic atom were to undergo ionization, what would be the charge of the most likely product?

Barium ions carry a 2+ charge, and nitrogen ions carry a 3-charge. What would be the chemical formula for the ionic compound barium nitride?

What is the compound that forms if you react potassium and sulfur?

Which of the following would have the highest boiling point?

Patterns of Motion and Equilibrium

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

Thermal Energy and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Light

Atoms and the Periodic Table

The Atomic Nucleus and Radioactivity

Elements of Chemistry

Mixtures

How Chemicals React

Two Classes of Chemical Reactions

Organic Compounds

Rocks and Minerals

Plate Tectonics and Earths Interior

Shaping Earths Surface

Geologic Timereading the Rock Record

The Oceans, Atmosphere, and Climatic Effects

Driving Forces of Weather

The Solar System

Stars and Galaxies

The Structure of Space and Time

Prologue: the Nature of Science

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Exam 15: How Atoms Bond and Molecules Attract

What it the main difference between an ionic and a covalent bond?

Which of the following bonds would be the least polar?

The neon atom tends NOT to gain any additional electrons because

How many covalent bonds would the following atom usually form?

Take money away from your bank account and the bank will show a negative credit. Take an electron away from an atom, however, and the atom shows up positive. Explain.

What property of alloys make them ideal for developing new materials?

If the following generic atom were to undergo ionization, what would be the charge of the most likely product?

Barium ions carry a 2+ charge, and nitrogen ions carry a 3-charge. What would be the chemical formula for the ionic compound barium nitride?

What is the compound that forms if you react potassium and sulfur?

Which of the following would have the highest boiling point?

Patterns of Motion and Equilibrium

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

Thermal Energy and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Light

Atoms and the Periodic Table

The Atomic Nucleus and Radioactivity

Elements of Chemistry

Mixtures

How Chemicals React

Two Classes of Chemical Reactions

Organic Compounds

Rocks and Minerals

Plate Tectonics and Earths Interior

Shaping Earths Surface

Geologic Timereading the Rock Record

The Oceans, Atmosphere, and Climatic Effects

Driving Forces of Weather

The Solar System

Stars and Galaxies

The Structure of Space and Time

Prologue: the Nature of Science

Filters