Question 1

What needs to be done to convert a neutral nitrogen atom into an N3- species?

Accepted Answer

A) add three electrons 
B) remove three electrons 
C) remove three protons 
D) add three protons 
E) add three nitrogens

Question 2

Which of the following is a positive ion?

Accepted Answer

A) Na+ 
B) Ca2+ 
C) Mg2+ 
D) Al3+ 
E) all of the above

Question 3

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

Accepted Answer

A) +1 
B) -2 
C) -3 
D) +4 
E) would probably not ionize

Question 4

The acronym VSEPR stands for ________.

Accepted Answer

A) valence shell electron positive repulsion 
B) very significant electron pull resonance 
C) valence shell electron pair repulsion 
D) valentia sia electronus partium resonancius

Question 5

If carbonic acid (H2CO3)were to undergo ionization, what would one of the products be?

Accepted Answer

A) H- 
B) CO2 
C) H2O 
D) CO3- 
E) CO32-

Question 6

crystals are composed of ________.

Accepted Answer

A) units of  molecules held together by dipole interactions 
B) groups of  ions and  molecules 
C) units composed of six Mg atoms and six  molecules 
D) a multitude of  ions and  ions grouped together in a three-dimensional array with a 1:2 ratio of  to  
E) a two-dimensional array of [-Mg-Cl-Cl-] units

Question 7

Consider the electron-dot geometries of P  and S  . Which do you expect is the more polar compound?

Accepted Answer

A) The P  should be more polar because it has a greater number of fluorines. 
B) The P  should be more polar because it is more symmetrical. 
C) The S  should be more polar because it has a lone pair of electrons. 
D) The S  should be more polar because it is less symmetrical.

Question 8

Many analogies can be drawn between chemical bonds and human relationships. For example, which is more analogous to marriage: the ionic bond or the covalent bond? Which is more analogous to the single life?

Accepted Answer

A) marriage=covalent bond; single=ionic bond 
B) marriage=covalent bond; single=covalent bond 
C) marriage=ionic bond; single=covalent bond 
D) marriage=ionic bond; single=ionic bond

Question 9

Which of the following is the correct electron dot structure for carbon (atomic no. = 6)?

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) e

Question 10

How many substituents are on the following nitrogen atom?

Accepted Answer

A) 1 
B) 3 
C) 5 
D) 4 
E) none of the above

Question 11

Which of the following elements has six valence electrons?

Accepted Answer

A) Be 
B) B 
C) C 
D) N 
E) O

Question 12

How many oxide ions (O2-)are needed to balance the positive charge of a titanium ion (Ti4+)?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 6

Question 13

If the concentration of gold in seawater is 2.0 milligram per ton of sea water and the mass of the ocean is 1.5 × 1018 tons, how much gold is in the ocean?

Accepted Answer

A) 3.0 × 1012 kg 
B) 3.0 kg 
C) 300 g 
D) 36 mg 
E) 3,000 lb

Question 14

Two molecules, A and B, have very different physical properties. A and B do not mix. Molecule A boils at 80°C and freezes at -30°C. Molecule B boils at 35°C and freezes at -100°C. Which molecule is likely to have the largest dipole?

Accepted Answer

A) molecule A 
B) molecule B 
C) Not enough information was given. 
D) Both have similar dipoles. 
E) Molecule A and B are the same, but with different properties.

Question 15

What is the molecular shape of the following molecule?

Accepted Answer

A) linear 
B) bent 
C) tetrahedral 
D) octahedral 
E) rectangular

Question 16

What is the valence shell?

Accepted Answer

A) It is the outermost shell of electrons in an atom. 
B) It is the shell of electrons in an atom that is the least reactive. 
C) It is the last partially filled orbital in an atom. 
D) It is the shell of electrons in element V (atomic no. = 23) 
E) It is the same as the orbital configuration.

Question 17

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

Question 18

The source of an atom's electronegativity is the ________.

Accepted Answer

A) repulsive force occurring among electrons within the same shell 
B) repulsive force occurring between electrons within neighboring shells 
C) effective nuclear charge 
D) kinetic energy electrons have orbiting the nucleus

Question 19

Why are metal ores so valuable?

Accepted Answer

A) They are sources of naturally occurring gold. 
B) Metals can be efficiently extracted from them. 
C) They tend to occur in scenic mountainous regions. 
D) They hold many clues to Earth's natural history.

Question 20

How is the number of unpaired valence electrons in an atom related to the number of bonds that the atom can form?

Accepted Answer

A) There is no defined relationship between the number of unpaired valence electrons and number of bonds that the atom can form. 
B) The number of unpaired valence electrons in an atom is one-half the number of bonds that the atom can form. 
C) The number of unpaired valence electrons in an atom is twice the number of bonds that the atom can form. 
D) The number of unpaired valence electrons in an atom is the same as the number of bonds that the atom can form.

Exam 6: How Atoms Bond

What needs to be done to convert a neutral nitrogen atom into an N^3- species?

Which of the following is a positive ion?

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

The acronym VSEPR stands for ________.

If carbonic acid (H₂CO₃) were to undergo ionization, what would one of the products be?

crystals are composed of ________.

Consider the electron-dot geometries of P and S . Which do you expect is the more polar compound?

Many analogies can be drawn between chemical bonds and human relationships. For example, which is more analogous to marriage: the ionic bond or the covalent bond? Which is more analogous to the single life?

Which of the following is the correct electron dot structure for carbon (atomic no. = 6) ?

How many substituents are on the following nitrogen atom?

Which of the following elements has six valence electrons?

How many oxide ions (O^2-) are needed to balance the positive charge of a titanium ion (Ti⁴⁺) ?

If the concentration of gold in seawater is 2.0 milligram per ton of sea water and the mass of the ocean is 1.5 × 10¹⁸ tons, how much gold is in the ocean?

Two molecules, A and B, have very different physical properties. A and B do not mix. Molecule A boils at 80°C and freezes at -30°C. Molecule B boils at 35°C and freezes at -100°C. Which molecule is likely to have the largest dipole?

What is the molecular shape of the following molecule?

What is the valence shell?

The neon atom tends NOT to gain any additional electrons because ________.

The source of an atom's electronegativity is the ________.

Why are metal ores so valuable?

How is the number of unpaired valence electrons in an atom related to the number of bonds that the atom can form?

Exam 6: How Atoms Bond

What needs to be done to convert a neutral nitrogen atom into an N3- species?

Which of the following is a positive ion?

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

The acronym VSEPR stands for ________.

If carbonic acid (H2CO3) were to undergo ionization, what would one of the products be?

crystals are composed of ________.

Consider the electron-dot geometries of P and S . Which do you expect is the more polar compound?

Many analogies can be drawn between chemical bonds and human relationships. For example, which is more analogous to marriage: the ionic bond or the covalent bond? Which is more analogous to the single life?

Which of the following is the correct electron dot structure for carbon (atomic no. = 6) ?

How many substituents are on the following nitrogen atom?

Which of the following elements has six valence electrons?

How many oxide ions (O2-) are needed to balance the positive charge of a titanium ion (Ti4+) ?

If the concentration of gold in seawater is 2.0 milligram per ton of sea water and the mass of the ocean is 1.5 × 1018 tons, how much gold is in the ocean?

Two molecules, A and B, have very different physical properties. A and B do not mix. Molecule A boils at 80°C and freezes at -30°C. Molecule B boils at 35°C and freezes at -100°C. Which molecule is likely to have the largest dipole?

What is the molecular shape of the following molecule?

What is the valence shell?

The neon atom tends NOT to gain any additional electrons because ________.

The source of an atom's electronegativity is the ________.

Why are metal ores so valuable?

How is the number of unpaired valence electrons in an atom related to the number of bonds that the atom can form?

What needs to be done to convert a neutral nitrogen atom into an N^3- species?

If carbonic acid (H₂CO₃) were to undergo ionization, what would one of the products be?

How many oxide ions (O^2-) are needed to balance the positive charge of a titanium ion (Ti⁴⁺) ?

If the concentration of gold in seawater is 2.0 milligram per ton of sea water and the mass of the ocean is 1.5 × 10¹⁸ tons, how much gold is in the ocean?