American Chemical Society (A.C.S) General Chemistry Exam
70 multiple choice questions, 110 minute
Bring a Scantron, calculator and pencil(s)
Preview for ACS-Standardized final Exam
1. 70 Multiple Choice questions, 110 minute. Bring a Scantron, calculator and pencil(s)
2. Scoring is based on correct answers. If you don’t know the answer, it pays to guess. It especially
pays to rule out one or two obviously incorrect answers, even if you aren’t sure about which
answer is actually correct.
3. Total time will be 110 minutes. This means you have 1 minute and 34 seconds per question.
Time management is important, but most students complete in time. A more common error
than going too slow is to work too fast, hurrying early in the test and not taking enough time to
carefully read through the questions and look at all the answers. I think it is foolish to every
leave before time expires on a multiple choice exam, because the time wasted by leaving early
will usually be enough to have rechecked several guess problems and to have eliminated some
impossible answers. If time permits, you would like to answer the problem on your own, and
then see if your answer matches on of the listed alternatives.
4. There are likely going to be questions that you do not know. While you will not get them all right
(a student can totally guess on 15 questions and still get an A!), the key is that you get at least
some of the questions absolutely certain, and can make an educated guess on a reasonable
portion of the rest.
5. Scores, percentiles, and Grades. The statistical analysis is based on the performance of 1,000
students. Shown below are some raw scores with the corresponding nation percentiles, and the
grade that will correspond.
RAW
Score
Percentile
Rank
Grade
Recorded
RAW
Score
Percentile
Rank
Grade
Recorded
RAW
Score
Percentile
Rank
Grade
Recorded
10
0%
15
33
31%
75
52
90%
100
17
2%
20
34
34%
75
53
92%
100
(17.5 should be the statistically
average score of a monkey
guessing!)
35
38%
75
54
93%
100
36
41%
80
55
94%
100
18
3%
25
37
45%
80
56
95%
100
19
3%
30
38
49%
80
57
96%
100
20
4%
35
National Average is 38.3
58
97%
100
21
5%
40
39
53%
80
59
98%
100
22
6%
45
40
56%
80
60
98%
100
23
7%
50
41
60%
85
61
98%
100
24
9%
55
42
64%
85
62
99%
100
25
10%
55
43
67%
85
63
99%
100
26
12%
60
44
71%
90
64
99%
100
27
14%
60
45
74%
90
65
99%
100
28
16%
65
46
77%
90
66
100%
100
29
19%
65
47
80%
90
67
100%
100
30
22%
70
48
82%
95
68
100%
100
31
24%
70
49
84%
95
69
100%
100
32
28%
70
50
87%
95
70
100%
100
51
89%
95
