1. Periodic Table 8.5C: Periodic Table Re-templated JPh 7/31
Matter and Energy
Periodic Table
Part I: Patterns and Codes
8.5C: Periodic Table
Re-templated JPh 7/31 1 1

2. Part I: Patterns and Codes, continued
Periodic Table
Matter and Energy
Part I: Patterns and Codes, continued
How many periods are shown on the Periodic Table? ______________________________
How is the number of energy levels in an atom related to the period number? _________________________________________________________________________
To which period does the Lanthanide series belong? __________ Actinide? ____________
Use the observed pattern to predict the number of energy levels in a neutral atom:
Rb – Rubidium (atomic number 37) _____________ Cs – Cesium (atomic number 55) _____________ Fr – Francium (atomic number 87) _____________ Ni – Nickel (atomic number 28) _____________ Hg – Mercury (atomic number 80) _____________ Kr – Krypton (atomic number 36) _____________
What pattern do you see as you compare elements that belong in groups 1A to 8A on the Periodic Table? __________________________________________________________________________________________________________________________________________________
Use this observed pattern to predict how many valence electrons would be found in the following neutral atoms: I – Iodine (atomic number 53) _____________ Ra – Radium (atomic number 88) _____________ Ga – Gallium (atomic number 31) _____________ Sn – Tin (atomic number 50) _____________ Sb – Antimony (atomic number 51) _____________ Rn – Radon (atomic number 86) _____________
Use the Periodic Table for the following questions.
Name the element with two valence electrons in the fourth energy level _______________
Name the element with six valence electrons in the second energy level _______________ 2

3. X C Si Ge Sn Pb K O H N Ca Part II: Putting it all Together
Periodic Table
Matter and Energy
Part II: Putting it all Together
Use this example to answer questions #1 and #2.
The example shown would be a member of group _________________________________
Use a Periodic Table to list the chemical symbols for each member of the group that is represented by the example. _________________________________________________________________________
Use a red marker to draw valence electrons as dots for a member of group 4A on the X. X
Use a red marker to draw valence electron dots around each member of the group 4A elements using their chemical symbols below instead of the X.
C Si Ge Sn Pb
Use the Periodic Table and a red marker to draw valence electron dots around the chemical symbols for each of the following elements:
K O H N Ca
When moving from left to right in a period, the number of valence electrons _____________
When moving down a group, the number of energy levels ___________________________
When moving down the table within a specific group, all element group members have the same number of ______________________________ _____________________________. 3

4. Part II: Putting it all Together, continued
Periodic Table
Matter and Energy
Part II: Putting it all Together, continued
Periodic Table 4

5. Paste a Box C element here Paste a Box C element here Paste a Box C
Periodic Table
Matter and Energy
Part III: Properties!
Paste a Box C
element here
Paste a Box C
element here
Paste a Box C
element here
Paste a Box C
element here
Paste a Box B
element here
Paste a Box B
element here
Paste a Box B
element here
Paste a Box B
element here
Paste three elements with similar properties in a row along this line.
Paste three elements with similar properties in a row along this line.
Paste three elements with similar properties in a row along this line.
Paste three elements with similar properties in a row along this line.
Paste a Box A
element here
Paste a Box A
element here
Paste a Box A
element here
Paste a Box A
element here 5 5

6. Part III: Properties!, continued
Periodic Table
Matter and Energy
Part III: Properties!, continued
What chemical properties can be predicted about the elements Rubidium, Cesium, and Francium based on the matching characteristic found with the other three elements of group 1A (Potassium, Lithium, and Sodium)? _____________________________________________________________________________________________________________________________________________________________________
What is the number of valence electrons for these group 1A elements? ____________
What chemical properties can be predicted about the elements Strontium, Barium, and Radium based on the matching characteristic found with the other three elements of group 2A (Calcium, Magnesium, and Beryllium)? _______________________________________________________ _______________________________________________________ _______________________________________________________
What is the number of valence electrons for these group 2A elements? ____________
What chemical properties can be predicted about the elements Iodine and Astatine based on the matching characteristic found with the other three elements of group 7A (Fluorine, Chlorine, and Bromine)? _______________________________________________________ _______________________________________________________ _______________________________________________________
What is the number of valence electrons for these group 7A elements? ____________
What chemical properties can be predicted about the elements Krypton, Xenon, and Radon based on the matching characteristic found with the other three elements of group 8A (Argon, Neon, and Helium)? _______________________________________________________ _______________________________________________________ _______________________________________________________
What is the number of valence electrons for these group 8A elements? ____________ 6

7. Studentium Elements Data Table
Periodic Table
Matter and Energy
Part IV: Studentium Elements
Studentium Elements Data Table
Element name: __________________Symbol: ______
___(p+) ___(n0) = ___ ___ atomic mass of 1 atom
Find the average for the above column.
Average atomic mass =
If found on the Periodic Table, the box would look like:
the atomic number →
the name of the element →
the chemical symbol →
the atomic mass →
___(p+) ___(n0) = ____ ___ atomic mass of 1 atom
_ Find the average for the above column. 7

8. Part IV: Studentium Elements, continued
Periodic Table
Matter and Energy
Part IV: Studentium Elements, continued
What subatomic particle remained the same in number within each atom of the Studentium elements? _____________________________________________________________________________________________________________________________________________________________________
What subatomic particle varied in number within each neutral atom of the Studentium elements? _______________________________________________________ _______________________________________________________ _______________________________________________________
Explain why average atomic mass is not a whole number for the Studentium elements. _______________________________________________________ _______________________________________________________ _______________________________________________________
Based on the Studentium activity, explain why the atomic mass numbers listed for elements on the Periodic Table are not whole numbers. _______________________________________________________ _______________________________________________________ _______________________________________________________ 8

9. X Reflections and Conclusions
Periodic Table
Matter and Energy
Reflections and Conclusions
Within the nucleus of individual atoms of the same element, the proton number ____________________________. Within the nucleus of individual atoms of the same element, the number of _________________________ may vary. This is why the _____________________ is shown on the Periodic Table as an average number.
Why are elements within the same group on the periodic table considered “family members?” _______________________________________________________ _______________________________________________________ _______________________________________________________
Use the “X” to represent any element member of group 6A and draw a representation of the valence electrons around the “X” below. X
What happens to the number of energy levels in the electron cloud with increasing period number? _______________________________________________________ _______________________________________________________ _______________________________________________________
Which of the following three elements, Carbon, Nitrogen, and Phosphorous, do you predict would exhibit similar properties? Explain your answer. _______________________________________________________ _______________________________________________________ _______________________________________________________
What does the number of valence electrons have to do with properties of elements within a group? _______________________________________________________ _______________________________________________________ _______________________________________________________ 9