Question 1

You notice that the majority of the electrons in NaCl spend their time around the chlorine.You also notice that the electrons in H2 are evenly distributed among the two atoms.Which two types of bonds are represented in these molecules?

Accepted Answer

A)  Covalent bonds in NaCl;ionic bonds in H2.
B)  Covalent bonds in NaCl;covalent bonds in H2.
C)  Ionic bonds in NaCl;ionic bonds in H2.
D)  Ionic bonds in NaCl;covalent bonds in H2.E) None of the above
F) C) and D)

Question 2

When one oxygen atom shares two pairs of electrons with another oxygen atom,O2 is formed via a(n)

Accepted Answer

A)  single covalent bond.
B)  double covalent bond.
C)  triple covalent bond.
D)  ionic bonD.
E)  hydrogen bond.F) A) and D)
G) A) and E)

Question 3

The strongest chemical bonds are

Accepted Answer

A)  hydrogen bonds.
B)  Van der Waal forces.
C)  hydrophobic interactions.
D)  ionic bonds.
E)  covalent bonds.F) C) and D)
G) A) and E)

Question 4

Isotopes are different forms of the same element that

Accepted Answer

A)  differ in their number of neutrons.
B)  differ in their number of protons.
C)  are all produced artificially.
D)  cannot form covalent bonds.
E)  cannot form ions.F) B) and E)
G) A) and C)

Question 5

What type of bonds form from the unequal sharing of electrons?

Accepted Answer

A)  hydrogen
B)  ionic
C)  polar covalent
D)  nonpolar covalent
E)  electrostaticF) B) and E)
G) A) and C)

Question 6

Helium is an inert gas that rarely reacts with other elements because it has the maximum number of valence electrons in its outer shell.

Accepted Answer

A) True 
 B)False

Question 7

The atomic number of an atom is

Accepted Answer

A)  the number of protons in the atom.
B)  the number of neutrons in the atom.
C)  the number of protons and electrons in the atom.
D)  the number of protons and neutrons in the atom.
E)  None of these choices are correct.F) D) and E)
G) C) and D)

Question 8

You've been given three new elements.One element had all its protons removed,one element had all its neutrons removed,and one element had all its electrons removed.The removal that would have the largest effect on atomic mass would be

Accepted Answer

A)  removing the protons.
B)  removing the neutrons.
C)  removing the electrons.
D)  all the changes would affect the atomic mass.E) A) and C)
F) A) and D)

Question 9

The hydroxyl (OH-)concentration of a solution with a pH of 8 would be 10-6 molar.

Accepted Answer

A) True 
 B)False

Question 10

Using the periodic table as a tool,identify the atomic characteristic that would most quickly and efficiently identify any single element.

Accepted Answer

A)  number of shells
B)  number of neutrons
C)  number of protons and electrons
D)  number of neutrons and electronsE) A) and D)
F) C) and D)

Question 11

One gram of hydrogen,which has an atomic mass of 1,would have fewer atoms than 1 gram of carbon that has an atomic mass of 12.

Accepted Answer

A) True 
 B)False

Question 12

The most hydrophilic substance is

Accepted Answer

A)  water.
B)  an ion.
C)  oil.
D)  an amphipathic molecule.
E)  a gas.F) A) and B)
G) A) and C)

Question 13

When one atom loses an electron to another atom,it results in the formation of

Accepted Answer

A)  a polar covalent bond and a new molecule.
B)  cations and anions that can form ionic bonds.
C)  a covalent bond between the two.
D)  many hydrogen bonds.
E)  a nonpolar covalent bond that is difficult to break.F) C) and E)
G) D) and E)

Question 14

If a person ingested a can of soda with a pH of 3,the body would work to maintain homeostasis by

Accepted Answer

A)  increasing the amount of H+ in an acidic solution.
B)  reducing the amount of H+ in an acidic solution.
C)  reducing the amount of H+ in an alkaline solution.
D)  increasing the amount of OH- ions in an alkaline solution.
E)  reducing the amount of OH- in an acidic solution.F) D) and E)
G) B) and C)

Question 15

Nitrogen has 7 electrons and can form a maximum of ________ bonds with other elements.

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  5F) B) and E)
G) All of the above

Exam 2: The Chemical Basis of Life I: Atoms, Molecules, and Water

Isotopes are different forms of the same element that

Correct Answer
verified

When one oxygen atom shares two pairs of electrons with another oxygen atom,O₂ is formed via a(n)

Correct Answer
verified

Using the periodic table as a tool,identify the atomic characteristic that would most quickly and efficiently identify any single element.

Correct Answer
verified

The hydroxyl (OH^-)concentration of a solution with a pH of 8 would be 10^-6 molar.

Correct Answer
verified

You've been given three new elements.One element had all its protons removed,one element had all its neutrons removed,and one element had all its electrons removed.The removal that would have the largest effect on atomic mass would be

Correct Answer
verified

One gram of hydrogen,which has an atomic mass of 1,would have fewer atoms than 1 gram of carbon that has an atomic mass of 12.

Correct Answer
verified

The strongest chemical bonds are

Correct Answer
verified

What type of bonds form from the unequal sharing of electrons?

Correct Answer
verified

Nitrogen has 7 electrons and can form a maximum of ________ bonds with other elements.

Correct Answer
verified

Helium is an inert gas that rarely reacts with other elements because it has the maximum number of valence electrons in its outer shell.

Correct Answer
verified

If a person ingested a can of soda with a pH of 3,the body would work to maintain homeostasis by

Correct Answer
verified

The most hydrophilic substance is

Correct Answer
verified

You notice that the majority of the electrons in NaCl spend their time around the chlorine.You also notice that the electrons in H₂ are evenly distributed among the two atoms.Which two types of bonds are represented in these molecules?

Correct Answer
verified

The atomic number of an atom is

Correct Answer
verified

When one atom loses an electron to another atom,it results in the formation of

Correct Answer
verified

Exam 2: The Chemical Basis of Life I: Atoms, Molecules, and Water

Isotopes are different forms of the same element that

Correct AnswerverifiedShow Answer

When one oxygen atom shares two pairs of electrons with another oxygen atom,O2 is formed via a(n)

Correct AnswerverifiedShow Answer

Using the periodic table as a tool,identify the atomic characteristic that would most quickly and efficiently identify any single element.

Correct AnswerverifiedShow Answer

The hydroxyl (OH-)concentration of a solution with a pH of 8 would be 10-6 molar.

Correct AnswerverifiedShow Answer

You've been given three new elements.One element had all its protons removed,one element had all its neutrons removed,and one element had all its electrons removed.The removal that would have the largest effect on atomic mass would be

Correct AnswerverifiedShow Answer

One gram of hydrogen,which has an atomic mass of 1,would have fewer atoms than 1 gram of carbon that has an atomic mass of 12.

Correct AnswerverifiedShow Answer

The strongest chemical bonds are

Correct AnswerverifiedShow Answer

What type of bonds form from the unequal sharing of electrons?

Correct AnswerverifiedShow Answer

Nitrogen has 7 electrons and can form a maximum of ________ bonds with other elements.

Correct AnswerverifiedShow Answer

Helium is an inert gas that rarely reacts with other elements because it has the maximum number of valence electrons in its outer shell.

Correct AnswerverifiedShow Answer

If a person ingested a can of soda with a pH of 3,the body would work to maintain homeostasis by

Correct AnswerverifiedShow Answer

The most hydrophilic substance is

Correct AnswerverifiedShow Answer

You notice that the majority of the electrons in NaCl spend their time around the chlorine.You also notice that the electrons in H2 are evenly distributed among the two atoms.Which two types of bonds are represented in these molecules?

Correct AnswerverifiedShow Answer

The atomic number of an atom is

Correct AnswerverifiedShow Answer

When one atom loses an electron to another atom,it results in the formation of

Correct AnswerverifiedShow Answer

Correct Answer
verified

When one oxygen atom shares two pairs of electrons with another oxygen atom,O₂ is formed via a(n)

Correct Answer
verified

Correct Answer
verified

The hydroxyl (OH^-)concentration of a solution with a pH of 8 would be 10^-6 molar.

Correct Answer
verified

Correct Answer
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Correct Answer
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You notice that the majority of the electrons in NaCl spend their time around the chlorine.You also notice that the electrons in H₂ are evenly distributed among the two atoms.Which two types of bonds are represented in these molecules?

Correct Answer
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Correct Answer
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Correct Answer
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