Periodic Trends Worksheet Page 11
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18Honors Chemistry - Michalek
11
Unit 06 Periodic Trends
Unit 06 – Periodic Trends
NAME: ______________________
Laboratory Activity 6A – Density is a Periodic Property
You should create a complete lab report for this Laboratory Activity.
The Periodic Table was developed by Dmitri Mendeleev in the mid-1800s. Mendeleev put all of the elements
in order based on mass, and noticed a periodic reoccurance of chemical and physical properties. He arranged
the elements in columns. Elements in each column have similar properties. Occasionally, he would find a hole
in the table. He could use the surrounding information to predict the properties of a yet-to-be-discovered
element. As new elements were discovered, they neatly filled holes in the periodic table.
You will be given samples of Silicon, Tin, and Lead. All of these elements are in the same column of the
Periodic Table, and have similar properties. Using a balance, you will find the mass of a sample of each
element. Using a graduated cylinder and some water, you will then find the volume of each sample. Then, you
can determine the density of each element using calculations you have already mastered.
Your goal for this lab is to determine the density of Germanium, element #32, based on what you learn
about the other elements in the same column. Watch for patterns. Use this sample data table below to
guide your experimental design.
Qualitative
Symbol
Element
Mass of
Mass of WB
Volume of
Volume of
Observations
Weigh
and Element
water
water and
3
Boat
(g)
(cm
)
Element
3
(g)
(cm
)
Si
Silicon
XXXXXXX
XXXXXX
XXXXXX
XXXXXX
XXXXXXX
Ge
Germanium
XXXXXXX
XXXXXX
XXXXXX
XXXXXX
XXXXXXX
XXXXXXX
XXXXXX
XXXXXX
XXXXXX
XXXXXXX
Sn
Tin
Pb
Lead
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