Question 1

Which property of water allows it to act as a transport medium?

Accepted Answer

A)   cohesion
B)   high heat of evaporation
C)   high heat capacity
D)   water is solvent
E)   the frozen form is less dense than the liquid formF) A) and B)
G) A) and C)

Question 2

All of the following are examples of damage caused by acid deposition from rain EXCEPT

Accepted Answer

A)   leaching of aluminum from the soil into lakes which results in the formation of toxic methyl mercury from mercury in the lake sediments.
B)   weakens trees in the forests and kills seedlings.
C)   increased agricultural yields.
D)   damage to marble and limestone monuments.E) None of the above
F) A) and B) C

Question 3

The scale ranges from 1 to 15.

Accepted Answer

A) True 
 B)False

Question 4

Anything below pH 7 is acidic and above pH 7 is basic.

Accepted Answer

A) True 
 B)False

Question 5

Which type of covalent bond is the strongest?

Accepted Answer

A)   single
B)   double
C)   triple
D)   quadruple
E)   all covalent bonds are equal in strengthF) A) and B)
G) A) and C)

Question 6

Which term refers to the attraction to water molecules?

Accepted Answer

A)   hydrophilic
B)   hydrophobic
C)   hydrolysis
D)   photolysis
E)   nitrophylicF) C) and D)
G) None of the above

Question 7

A solution with a pH of 7.0 has _______ times ________ H+ than a solution of pH 10.

Accepted Answer

A)   30; more
B)   300; less
C)   103; more
D)   10-3; less
E)   none of these are correct.F) C) and D)
G) B) and C)

Question 8

Which one is NOT one of the properties of water?

Accepted Answer

A)   the frozen form is more dense than the liquid form
B)   the frozen form is less dense than the liquid form
C)   water is a solvent
D)   water has a high heat capacity
E)   water has a high heat of evaporationF) C) and D)
G) A) and B)

Question 9

A solution with a pH of 6 has ________ times _________ OH- than a solution with a pH of 10.

Accepted Answer

A)   40; more
B)   4000; less
C)   104; less
D)   4; less
E)   104 moreF) D) and E)
G) C) and D)

Question 10

Study the figures to determine which is liquid water and which is frozen water (ice). Explain your answer and predict if the water in Figure 2 would float or sink in the water in Figure 1.

Accepted Answer

Figure 1 is liquid water, while Figure 2...

Question 11

A change of one pH unit represents a ten-fold increase or decrease in hydroxyl ion concentration.

Accepted Answer

A) True 
 B)False

Question 12

From the above table, it is apparent that

Accepted Answer

A)   triple bonds are stronger than double bonds; double bonds are stronger than single bonds.
B)   triple bonds are weaker than double bonds; double bonds are weaker than single bonds.
C)   carbon bonds are stronger than other bonds; hydrogen bonds are always weakest.
D)   carbon forms only single bonds.E) C) and D)
F) All of the above

Question 13

Which of the following would be a proposed mechanism by which stomach antacids work?

Accepted Answer

A)   Antacids dilute the solution, therefore lowering the pH.
B)   Antacids are bases and by definition can absorb H+ out of a solution.
C)   Antacids are bases and by definition can absorb OH- out of a solution.
D)   Antacids contain mostly water and so they neutralize the solution.E) B) and D)
F) B) and C)

Question 14

Draw three water molecules and the hydrogen bonding that may occur between the molecules. Define hydrogen bonding and explain how and why it occurs.

Accepted Answer

The hydrogen bonding is shown as dotted ...

Question 15

The characteristic way in which atoms of an element react is most related to the

Accepted Answer

A)   number of electrons in the outermost shell.
B)   number of electrons in the innermost shell.
C)   number of neutrons in the nucleus.
D)   size of the nucleus.E) None of the above
F) All of the above A

Question 16

Draw the structural formula of a single water molecule. Note the location of partial positive and negative charges. Label the covalent bonds.

Accepted Answer

Note the diagrams above. The c...

Question 17

From the above table of radioisotopes and their properties, it is obvious that

Accepted Answer

A)   the longer the half-life, the more energy emitted by the particles.
B)   the longer the half-life, the less energy emitted by the particles.
C)   radioisotopes of the same element must emit the same amount of energy in their emissions and decay at the same rate.
D)   adjusted for time, radioisotopes emit the same amount of energy in their emissions.
E)   energy and half-life are not directly related.F) A) and E)
G) A) and B)

Question 18

Human blood has a pH of about 7.4. This is

Accepted Answer

A)   neutral.
B)   very acidic.
C)   slightly acidic.
D)   slightly basic.E) All of the above
F) A) and B) D

Question 19

If an element contains 8 electrons how many electrons will be placed in the 2nd valence shell?

Accepted Answer

A)   6
B)   2
C)   8
D)   5
E)   11F) C) and E)
G) C) and D)

Question 20

What is the maximum number of electrons that will be in the 1st valence shell?

Accepted Answer

A)   2
B)   1
C)   3
D)   6
E)   8F) A) and E)
G) A) and D)

Exam 2: Basic Chemistry

Which property of water allows it to act as a transport medium?

Correct AnswerverifiedShow Answer

All of the following are examples of damage caused by acid deposition from rain EXCEPT

Correct AnswerverifiedC

The scale ranges from 1 to 15.

Correct AnswerverifiedShow Answer

Anything below pH 7 is acidic and above pH 7 is basic.

Correct AnswerverifiedShow Answer

Which type of covalent bond is the strongest?

Correct AnswerverifiedShow Answer

Which term refers to the attraction to water molecules?

Correct AnswerverifiedShow Answer

A solution with a pH of 7.0 has _______ times ________ H+ than a solution of pH 10.

Correct AnswerverifiedShow Answer

Which one is NOT one of the properties of water?

Correct AnswerverifiedShow Answer

A solution with a pH of 6 has ________ times _________ OH- than a solution with a pH of 10.

Correct AnswerverifiedShow Answer

Study the figures to determine which is liquid water and which is frozen water (ice). Explain your answer and predict if the water in Figure 2 would float or sink in the water in Figure 1.

Correct AnswerverifiedFigure 1 is liquid water, while Figure 2...View AnswerShow Answer

A change of one pH unit represents a ten-fold increase or decrease in hydroxyl ion concentration.

Correct AnswerverifiedShow Answer

From the above table, it is apparent that

Correct AnswerverifiedShow Answer

Which of the following would be a proposed mechanism by which stomach antacids work?

Correct AnswerverifiedShow Answer

Draw three water molecules and the hydrogen bonding that may occur between the molecules. Define hydrogen bonding and explain how and why it occurs.

Correct AnswerverifiedThe hydrogen bonding is shown as dotted ...View AnswerShow Answer

The characteristic way in which atoms of an element react is most related to the

Correct AnswerverifiedA

Draw the structural formula of a single water molecule. Note the location of partial positive and negative charges. Label the covalent bonds.

Correct AnswerverifiedNote the diagrams above. The c...View AnswerShow Answer

From the above table of radioisotopes and their properties, it is obvious that

Correct AnswerverifiedShow Answer

Human blood has a pH of about 7.4. This is

Correct AnswerverifiedD

If an element contains 8 electrons how many electrons will be placed in the 2nd valence shell?

Correct AnswerverifiedShow Answer

What is the maximum number of electrons that will be in the 1st valence shell?

Correct AnswerverifiedShow Answer

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A solution with a pH of 7.0 has _ times __ H⁺ than a solution of pH 10.

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A solution with a pH of 6 has times _ OH^- than a solution with a pH of 10.

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Figure 1 is liquid water, while Figure 2...
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The hydrogen bonding is shown as dotted ...
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A

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Note the diagrams above. The c...
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D

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