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Graphing Practice
Ionization Energy Data
The energy needed to remove the most loosely held electron in an atom is called the First
Ionization Energy. This energy for the first 18 elements is shown in the table below.
Atomic Number 1st I.E. (volts)
1
13.53
2
24.46
3
5.64
4
9.28
5
8.26
6
11.22
7
14.48
8
13.55
9
17.34
10
21.47
11
5.12
12
7.61
13
5.96
14
8.12
15
10.9
16
10.3
17
12.95
18
15.68
A. This data is very accurately measured. Plot the data points and then draw a line
graph in "connect-the-dot" fashion.
Plant Hormone Data
Amount of ethylene in
ml/m2
Wine sap
Apples:
Days to
Maturity
Golden
Apples:
Days to
Maturity
Gala Apples:
Days to
Maturity
10
14
14
15
15
12
12
13
20
11
9
10
25
10
7
9
30
8
7
8
35
8
7
7
A. Ethylene is a plant hormone that causes fruit to mature. The data above concerns
the amount of time it takes for fruit to mature from the time of the first application
of ethylene by spraying a field of trees.
B. Make a line graph of the data.
C. What is the dependent variable?
D. What is the independent variable?
Experimental Drug & Mice Data
An experiment studies the effects of an experimental drug on the number of offspring a
mother mouse has. 10 female mice are given the drug and then impregnated. The number
of mice in their litters is compared to the litters of mice that did not take the drug.
Number of Babies in Litter
Group A
5 6 4 8 5 2 7 12 12 8
(drug)
Group B
4466564 7 5 3
(control)
A. Based on the data, what would you conclude about the drug, did it work?
B. What type of graph would best represent the data?
Oxygen Production Data
Oxygen can be generated by the reaction of Hydrogen Peroxide with Manganese Dioxide.
2H2O2 + MnO2 2H2O + Mn + 2O2
A chemistry class sets up nine test tubes and places different masses of MnO2 in each test
tube. An equal amount of H2O2 is added to each test tube and the volume of gas produced
is measured each minute for five minutes. The data from the experiment is:
Tube #
MnO2 (g)
1 min (ml O2)
2 min (ml O2)
3 min (ml O2)
4 min (ml O2)
5 min (ml O2)
1
0.1
1.4
2.6
3.5
4.2
5.1
2
0.2
2.8
4.6
5.8
7.1
7.6
3
0.3
4.9
7.2
8.8
10.2
11.3
4
0.5
5.9
8.5
10.4
11.8
13.3
5
1.0
8.5
12.4
14.4
16.1
17.1
6
1.5
11.0
14.8
17.5
19.8
21.8
7
2.0
12.0
17.0
20.2
22.7
24.8
8
2.5
13.6
19.0
22.1
24.7
27.3
9
3.0
16.2
21.8
25.1
28.2
30.4
A.
B.
C.
D.
E.
F.
What volume of O2 did tube #3 produce between the second and fourth minutes?
How much O2 is produced in tube #5 during the first two minutes?
How much oxygen did tubes 7 and 8 produce together during the third minute?
What volume of oxygen gas, in liters, was produced during this procedure?
Graph the amount of oxygen produced each minute in test tubes # 2, 4, and 6.
By comparing the slope of the graph curves, which tube was producing oxygen at
the fastest rate between minutes four and five?
G. Make a graph using the mass of manganese dioxide and the volume of oxygen for all
tubes at five minutes.
Shark Population Data
The population of tiger sharks off the coast of Florida was recorded over several months.
January
12
February 15
March
25
April
35
May
34
June
44
July
49
August
55
September 72
October
85
November 98
December
105
The number of nurse sharks was also recorded for this time period; though the person
recording the number was not very reliable. The following data was taken on nurse sharks.
March
60
April
52
July
38
August
20
November 14
December 11
A. Graph both sets of data together.
B. At what month would you expect the number of nurse sharks to equal the number
of tiger sharks?
C. What does the graph tell you about the trends of both shark populations?