Test bank for general organic and biological chemistry 6th edition by timberlake

Test Bank for General Organic and Biological Chemistry 6th Edition by Timberlake
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Name___________________________________

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) Water, H 2 O, is an example of a(n)

1)

A) wave.
B) type of energy.
C) chemical.
D) electric charge.
E) element.
2) In this list, which substance can be classified as a chemical?
A) heat
B) cold
C) sleep
D) salt
E) temperature

2)

3) One example of a chemical used in toothpaste is
A) chlorine.
B) calcium carbonate.
C) sugar.
D) carbon dioxide.
E) sulfur.

3)

4) Which of the following is NOT a chemical?
A) sugar
B) water
C) salt
D) carbon dioxide
E) light

4)

5) Sodium fluorophosphate is a chemical used in toothpaste to
A) keep the paste from spoiling.
B) remove plaque.
C) disinfect the toothbrush.
D) strengthen tooth enamel.
E) make the paste white.

5)

6) Titanium dioxide is a chemical used in toothpaste to
A) make the toothpaste white.
B) keep the paste from spoiling.
C) strengthen tooth enamel.
D) remove plaque.
E) disinfect the toothbrush.

6)

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Test Bank for General Organic and Biological Chemistry 6th Edition by Timberlake
Full file at />7) When a part of the body is injured, substances called ________ are released.
A) aspirins
B) chlorofluorocarbons
C) pain relievers
D) nitrogen oxides
E) prostaglandins
8) Which of the following is a chemical?
A) sound
B) light

7)

8)
C) heat

D) noise

E) sugar

9) You notice that there is more traffic between 8:00 and 9:00 AM. This would be a(n)
A) conclusion/theory.
B) observation.
C) experiment.
D) hypothesis.

9)

10) There is more traffic between 8:00 and 9:00 AM because most people start work at 9:00 AM. This
would be a(n)
A) experiment.
B) observation.
C) conclusion/theory.
D) hypothesis.

10)

11) In order to enhance your learning in chemistry, you should NOT
A) wait until the night before the exam to study.
B) form a study group.
C) be an active learner.
D) study a little every day.
E) go to professor's office hours.

11)

12) Which of the following would NOT be part of a study plan to learn chemistry?
A) form a study group
B) study a little every day
C) work the sample problems
D) read the chapter before class
E) skip your professor's office hours

12)

13) In the number 12.345, the 4 is in the ________ place.
A) tens

B) ones
C) tenths
D) hundredths
E) thousandths

13)

14) In the number 12.345, the 1 is in the ________ place.
A) tens
B) ones
C) tenths
D) hundredths
E) thousandths

14)

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Test Bank for General Organic and Biological Chemistry 6th Edition by Timberlake
Full file at />15) In the number 12.345, the 3 is in the ________ place.
A) tens
B) ones
C) tenths
D) hundredths
E) thousandths

15)

16) The product of (-4) × (-5) is
A) .1
B) .20

C) -1

D) 0

E) -20

17) For the equation 4x + 2 = 10 , x equals
A) 3
B) 12

C) -2

D) 2

E) 8

16)

17)

18) For the equation 6y -20 = -2 , y equals
A) -3
B) -2

C) 3

D) 2

E) 4

19) For the equation : -10 - (-4) =
A) -6
B) 4

C) 14

D) -14

E) 6

20) 12 is what percentage of 36?
A) 33%
B) 12%

C) 3%

D) 330%

E) 30%

21) 16 is what percentage of 80?
A) 5%
B) 20%

18)

19)

20)

21)
C) 50%

D) 200%

E) 2%

22) On the graph, what is the temperature after 40 minutes?

A) 57 °C

B) 40 °C

C) 26 °C

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22)

D) 44 °C

E) 36 °C


Test Bank for General Organic and Biological Chemistry 6th Edition by Timberlake

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23) On the graph, how long does it take to cool to from 80 °C go 45 °C?

A) 60 min

B) 35 min

C) 75 min

D) 25 min

E) 42 min

24) Written in scientific notation, 540 000 is
A) 5.4 × 10 -5 .
B) 54 × 108 .

24)
C) 5.4.

D) 5.4 × 10 5 .

E) 0.54 × 106 .

25) Written in scientific notation, 8300 is
A) 8.3 × 10 4 .
B) 8.3 × 10 -2 .

C) 8.3 × 10 3 .

D) 8.3 × 10 -3 .

E) 8.3 × 10 2 .

26) Written in scientific notation, 0.000 000 33 is
A) 3.3 × 10 -7 .
B) 3.3.
C) 3.3 × 10 8 .

D) 3.3 × 10 -8 .

E) 3.3 × 10 7 .

25)

26)

27) Written in scientific notation, 0.000 004 03 is
A) 4.03 × 106 .

27)

B) 0.403 × 10-5 .
C) 4.03.
D) 4.03 × 10-7 .
E) 4.03 × 10-6 .
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
28) A substance that always has the same composition and properties is called a(n) ________.

28)

29) Any material used in or produced by a chemical reaction is a(n) ________.

29)

30) An abrasive used in toothpaste is ________.

30)

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Test Bank for General Organic and Biological Chemistry 6th Edition by Timberlake
Full file at />31) The substances released when tissues are injured are ________.

31)

32) The chemical used to make cans and foil is ________.

32)

33) The first step in the scientific method is to ________.

33)

34) The second step in the scientific method is to ________.

34)

35) In the number 45.678, the digit 6 is in the ________ place.

35)

36) 40 students complete the first semester chemistry course. If 32 students take the second
semester class, ____% are taking this class.

36)

37) Express using scientific notation: 351 000 000 000

37)

38) Express using scientific notation: 0.000 860

38)

39) Express using scientific notation: 5 207 000

39)

40) Express using scientific notation: 0.000 000 050

40)

TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
41) Titanium dioxide in toothpaste is used as a detergent.

41)

42) Calcium carbonate is used to sweeten toothpaste.

42)

43) Paracelsus was a Greek philosopher.

43)

44) The first step in the scientific method is to draw a conclusion.

44)

45) Doing experiments to test your hypothesis is part of the scientific method.

45)

46) If one experiment is successful, your hypothesis becomes a scientific theory.

46)

47) Working with a group of students can help you learn chemistry.

47)

48) Keeping a problem notebook will help you do well in your chemistry class.

48)

49) It is a good idea to wait until the night before an exam to start to study.

49)

50) You should always look at the given answer to a problem before you attempt to solve the problem.

50)

51) In the number 123.45, the digit 5 is in the hundreds place.

51)

52) In the number 123.45, the digit 3 is in the ones place.

52)

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Test Bank for General Organic and Biological Chemistry 6th Edition by Timberlake
Full file at />53) When -7 is added to -5 the answer is 12.

53)

54) If a negative number is divided by another negative number, the answer will be a positive number.

54)

55) If -2x = 8, x is equal to 4.

55)

56) If 12 students in a class of 36 students got an "A" grade on the exam, 33% of the students earned an
"A".

56)

57) 3.5 × 10 3 is equal to 3500.

57)

58) 2.25 × 10-4 is equal to 22500.

58)

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Test Bank for General Organic and Biological Chemistry 6th Edition by Timberlake
Full
file atKey
/>Answer
Testname: UNTITLED1

1) C
2) D
3) B
4) E
5) D

6) A
7) E
8) E
9) B
10) D
11) A
12) E
13) D
14) A
15) C
16) B
17) D
18) C
19) A
20) A
21) B
22) D
23) E
24) D
25) C
26) A
27) E
28) chemical
29) chemical
30) calcium carbonate
31) prostaglandins
32) aluminum
33) make observations
34) form a hypothesis
35) tenths

36) 80
37) 3.51 × 1011

38) 8.60 × 10-4
39) 5.207 × 10 6
40) 5.0 × 10 -8
41) FALSE
42) FALSE
43) FALSE
44) FALSE
45) TRUE
46) FALSE
47) TRUE
48) TRUE
49) FALSE

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Test Bank for General Organic and Biological Chemistry 6th Edition by Timberlake
Full
file atKey
/>Answer
Testname: UNTITLED1

50) FALSE
51) FALSE
52) TRUE
53) FALSE

54) TRUE
55) FALSE
56) TRUE
57) TRUE
58) FALSE

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