Arnoldi / Lazaar
Chem Com
Unit Two Section A
Trends Activity
Data
Group Name
X
Aluminum
Carbon
Nitrogen
Oxygen
Aluminum
Carbon
Nitrogen
Oxygen
Aluminum
Carbon
Nitrogen
Oxygen
Aluminum
Carbon
Nitrogen
Oxygen
Aluminum
Carbon
Nitrogen
Oxygen
Atomic
Number
1
3
4
5
6
7
8
9
11
12
13
14
15
16
17
19
20
31
32
33
34
35
37
38
49
50
51
52
53
55
56
81
82
83
84
85
Atomic Radius
(Angstroms)
0.79
2.05
1.4
1.17
0.91
0.75
0.65
0.57
2.23
1.72
1.82
1.46
1.23
1.09
0.97
2.77
2.23
1.81
1.52
1.33
1.22
1.12
2.98
2.45
2.00
1.72
1.53
1.42
1.32
3.34
2.78
2.08
1.81
1.63
1.53
1.43
Ionization Energy
(V)
13.598
5.392
9.323
8.298
11.26
14.534
13.618
17.422
5.139
7.646
5.986
8.152
10.487
10.36
12.967
4.341
6.113
5.999
7.899
9.79
9.752
11.814
4.177
5.695
5.786
7.344
8.608
9.009
10.451
3.894
5.212
6.108
7.416
7.289
8.41
Don’t Graph 85
Electronegativity
2.2
0.98
1.57
2.04
2.55
3.04
3.44
3.98
0.93
1.31
1.61
1.9
2.19
2.58
3.16
0.82
1.00
1.81
2.01
2.18
2.55
2.96
0.82
0.95
1.78
1.96
2.05
2.10
2.66
0.79
0.89
2.04
2.33
2.02
2.00
2.20
PART ONE
Preparing to Graph
1. In the first column of the periodic table, notice how I inserted the group name “Aluminum” for
elements 5, 13, 31, etc. I also inserted the group names “Carbon”, “Nitrogen” and “Oxygen”.
What element (numbers) are in the Alkali Metals Group?
_______________________
What element (numbers) are in the Alkaline Earth Metals Group?
What element (numbers) are in the Halogen Group?
________________
_______________________
2. Use your answers from # 1 above to label each of the elements (not already labeled) in
the data table on the front page as either: Alkali Metal, Alkaline Earth Metal or Halogen.
3. Now, lightly color in the atomic number column as follows:
Hydrogen
Black
All Alkali Metals
Red
All Alkaline Earth Metals
Orange
All of the Aluminum Group
Yellow
All of the Carbon Group
Green
All of the Nitrogen Group
Blue
All of the Oxygen Group
Purple
All of the Halogen Group
Brown
PART TWO
Creating Your Graph Axes
USE A PENCIL!!!
Atomic Size / Radius
1. Place the graph paper in this direction.
2. Draw in the axes as follows (see extra directions below):
1
X Axis:
3
4
5
6
Draw the X axis on the third blue line from the bottom.
Start three lines from the left side, and end three lines
from the right side.
Label each block as shown above. Use only the atomic
numbers provided in the data table. (2, 10, etc. are not
graphed … don’t skip a block).
Y Axis:
Draw the Y axis on the third blue line from the left. Connect
it to the X axis, and draw until two blocks from the top.
Put “railroad” tracks in the first block.
Then, put a dash across the next line. Label that dash 0.5.
Skip four blue lines (each line = 0.1)
Put a dash across the next (fifth up) blue line. Label that line 1.0.
Continue in this pattern until you label 3.0.
3. Label your X and Y axes as needed. (One of them needs a unit!)
4. Put an appropriate title on your graph.
PART TWO, cont.
Creating Your Graph Axes
USE A PENCIL!!!
Ionization Energy
1. Place the graph paper in this direction.
2. Draw in the axes as follows:
1
X Axis:
3
4
5
6
Draw the X axis on the second blue line from the bottom.
Start three lines from the left side, and end three lines
from the right side.
Label each block as shown above. Use only the atomic
numbers provided in the data table. (2, 10, etc. are not
graphed … don’t skip a block). Also, skip 85.
Y Axis:
Draw the Y axis on the third blue line from the left. Connect
it to the X axis, and draw all the way to the top.
Put “railroad” tracks in the first block.
Then, skip a line. Put a dash across the next line. Label that dash 4.0
Skip one blue line (each line = 0.5)
Put a dash across the next (second up) blue line. Label that line 5.0.
Continue in this pattern until you label 17.0.
3. Label your X and Y axes as needed. (One of them needs a unit!)
4. Put an appropriate title on your graph.
PART TWO, cont.
Creating Your Graph Axes
USE A PENCIL!!!
Electronegativity
1. Place the graph paper in this direction.
2. Draw in the axes as follows:
1
X Axis:
3
4
5
6
Draw the X axis on the third blue line from the bottom.
Start three lines from the left side, and end three lines
from the right side.
Label each block as shown above. Use only the atomic
numbers provided in the data table. (2, 10, etc. are not
graphed … don’t skip a block).
Y Axis:
Draw the Y axis on the third blue line from the left. Connect
it to the X axis, and draw until two blocks from the top.
Put “railroad” tracks in the first block.
Then, skip a line. Put a dash across the next line. Label that dash 1.0.
Skip three blue lines (each line = 0.125)
Put a dash across the next (fifth up) blue line. Label that line 1.5.
Continue in this pattern until you label 4.0.
3. Label your X and Y axes as needed. (Neither of them needs a unit!)
4. Put an appropriate title on your graph.
PART THREE
Graphing Your Data
1. Now, it is time to graph your data. You will draw a DASH line __ across
(the box) as needed for each atomic number on your graph. You may need to
guestimate for some of your data points. For example:
Atomic Number 1 = 0.8 on atomic radius
= 13.6 on ionization energy
= 2.2 on electronegativity
2. Each atomic number on the X axis needs a bar graph. Use your color
coded atomic number column to determine the color of each bar based upon
its group. Color, NEATLY, up to the dash line you created in step 1.
3. Put a Key to your colors on the graph. (i.e purple = Halogens).
4. On your graph, label the Lithium (Alkali), Beryllium (Alkaline Earth) and
Fluorine (Halogens) bars. (These are in the same period.)
5. If you have the atomic size or ionization energy graph, label the Sodium
and Potassium bars. (These are in the same group / family). If you made
the electronegativity graph, label chlorine and bromine.
6. You are now ready to begin to answer the questions on the packet. You
will complete the packet in a group of three – one person for each type of
graph.