Most of the
earth's crust is made up of only 8 elements
which are referred to as "the most abundant elements of the earth's crust." In this activity students will identify these 8
elements by using a set of given clues about the "mystery elements."
Students should be familiar with the following:
Structure of an Atom
Click on any element symbol to view Bohr diagram. Atomic and Mass number
Development of the Periodic Table of Elements
How to the Periodic Table of Elements
interpret The Periodic Table Challenge
Students will be able to do the following after completing this lesson:
Access and use the Internet to perform research
Use any given information about a certain element to identify it
Develop a data table to record information
Convert percentages to degrees
Develop a model of an atom
Create a visual representation of data in a circle graph
Form a conclusion from recorded data
Access to the Internet
Drawing program (optional)
Data Table to Record Information (see below)
List of "mystery element" clues (see below)
Periodic Table (and related information) WEB SITES (see below)
"Mystery Element Clues"
I have 20 electrons and four energy levels.
I am a member of the "alkaline earth metals" family. I also have 12 neutrons.
I am the only gas in my family and I have 8 electrons.
I have a total of 14 neutrons. I also have a valence of 3.
I am one of the most reactive elements on the periodic table and I
have four energy levels.
I am a transition metal with 30 neutrons and 26 electrons.
I have 3 energy levels and belong to the "alkali metals family."
I belong to the same family as Sn and am also called a "metalloid."
Who are we
are not available, library references and common classroom materials can be used to complete
Complete the Data Table below for each "mystery clue" using provided links.
Draw or create 3D models of each of the elements' atoms.
Convert the percentages to degrees and create a circle graph.
Use the provided links to answer the questions.
Write your conclusion according to the
LAB WRITE-UP sheet in your journal.
Create an appropriate, colorful, and attractive cover sheet to be stapled to and turned in
with this lab.
Letter of Mystery Element
Element % in Crust
What is the state of matter of the abundant earth element? What
inferences can be made from this observation?
most What group does the most abundant element belong to?
metal, nonmetal, metalloid? Describe the general characteristics of this group of
second Explain why quartz is the most abundant earth mineral? Hint: you need to know its
Which element is found in the ore bauxite? /
hematite? What properties do each of
these metals have that make them so useful to man?
Categorize the remaining elements into their respective families. Based on the characteristics
of each family, what inferences can you make about their abundancy in the crust?
20 pts.- ALL Data is Complete and Accurate
15 pts. - MOST data is complete and accurate, however, a few mistakes were made
10 pts. - SOME mistakes were made, data lacks completeness and/or accuracy
5 pts. - MANY mistakes were made, almost totally incomplete and/or inaccurate
0 pts. - NO attempt was made to complete this section and/or totally inaccurate
Back to the Top
Thanks for stopping by!
You are #
Comments, questions, suggestions...WELCOME! Email
This website was created through an intensive technology training program for teachers,
GirlTECH, sponsored by The Center for Excellence and Equity in Education (CEEE)
, which is funded by the National Science Foundation.
Copyright © 1996-2006 Georgia Louviere