In Physical Science and Chemistry, students often
study the characteristics behind the Periodic Table.
LabQuest has a routine built into it that will aid in
discovering and characterizing what we call "periodicity".
Start LabQuest app by turning LabQuest on. If your LabQuest is
already on, we recommend you create a new file by tapping on File > New.
Either save or discard any data that is already in the
Plotting Table Data
- Tap on the "Home" icon in the lower task bar, . Select Periodic Table from
the menu that appears.
- Tap on any of the elements in the table. Note the
information that is available for each of the elements.
- You can put the information away fror the current element
by tapping the "X" in the upper
right-hand corner, then select another element if you wish.
- To put away the whole Periodic Table, tap the "X"
in the upper right-hand corner above the table.
- Tap File > Plot Periodic Table Graph.
- You will be presented with a graph of Atomic Radius (pm)
versus Atomic Number. "pm" stands for picometer, 10-12
- Tapping on the graph results in the display of the
specific atomic radius and corresponding atomic number and
symbol for the position you tapped.
- If you want to advance ahead by a single atomic number,
press the right-hand arrow button. If you want to go
backward a single atomic number, press the left-hand arrow
- Which elements form the peaks in the Atomic Radius vs.
Atomic Number graph? Where are these elements in the
LabQuest can display other quantities for study. Tap on the
y-axis label (Atomic Radius (pm)) and
choose from the various quantities that are shown you --
Melting Point, Boiling Point, Density, etc. In this way you
can study other important qualities of elements as you move
through the Periodic Table.
- Change the y-axis to First Ionization Energy,
the energy needed to add or remove an electron from the
atom. Tap on the x-axis label and change it to Atomic
Radius, the size of the atom.
- The graph will be very busy with lines, but we can remove
them by tapping on Graph > Graph Options. On the
lower left-hand side uncheck the box for "Connect
Points" and also the box for "Point Symbols".
- When you tap on "OK" you will see a
scatter plot of the data for Ionization Energy vs. Atomic
Radius. What does this graph tell you?
Using a similar approach, you can study how the various
quantities are related to one another across the Periodic Table.
The use of this powerful tool, which is built into LabQuest, is
now in the hands of the instructors. Note that you may wish to
update your LabQuest to the most current version. At this
writing, it is 1.7.3. See www.vernier.com/downloads
for instructions on updating LabQuest.
Also see: http://www.vernier.com/innovate/periodic-table-graphing/