Making An Ion Notes
Notes:
Teaching Ideas and Suggestions:
This is a great introductory activity for the topic of ion formation. We recommend saving it until students have learned about electron shells. A unit on chemical bonds would be a great placement for it. An understanding of the concept of a stable octet of electrons is one of the obvious learning outcomes of this activity. Students also recognize that there are patterns assoicated with the various groups of the periodic table.
We gave a lot of thought as to what to do with elements like the noble gases (that don't form ions), Group 14 elements (that rarely form ions), and hydrogen (that forms both +1 and -1 ions). We decided to leave notes regarding the behavior of these elements as opposed to ionizing them.
Classrooms can simply open the Interactive and explore the ideas. Or if desired, The Physics Classroom has prepared a student activity sheet for a more directed experience. The focus of the activity is on discovering patterns as to how elements in various groups form ions. An emphasis is placed on whether the atom gains or loses electrons and how many electrons are gained or lost. A comparison is made of the electron shell of an ion and that of a nearby noble gas. The activity ends with students writing a paragraph in which they describe their model of how and why atoms form ions. View Activity Sheet.
Our Making an Ion simulation is now available with a Concept Checker that coordinates closely with out Activity Sheet. Do the simulation with the help of the Activity Sheet. Then follow it up with the Concept Checker. Student progress is saved for classrooms with a Task Tracker subscription.
Related Resources:
Chemistry Tutorial: Chemical Bonding Chapter, Lesson 1b
Our Tutorial page on on Ions and Ionic Bonds is a great complement to this exercise.
Concept Builder: Ionic Bonding
Our Ionic Bonding Concept Builder is a great follow-up to this activity. It includes three scaffolded activities that interactively lead the student to understand ionic bonding as the bond that forms between metal and nonmetal elements through the transfer of electrons. There are a total of 38 questions organized into 14 different Question Groups and spread across the three activities. Question-specific help is provided for each of the 14 situations. Questions in the same Question Group are similar questions. Student progress is tracked and saved for Task Tracker classes.
Science Reasoning Center: The Periodic Table, Ions, and Ionic Compounds
Our interactive The Periodic Table, Ions, and Ionic Compounds science reasoning activity is also a great follow-up to our Make an Ion simulation. It includes five scaffolded activities that begin with an investigation of the substructure of atoms and ions. Then students explore the formation of ions by atoms of main group elements. Finally, the last two activities pertain to the ratio by which atoms of elements combine to form ionic compounds. Each activity places an emphasis upon the connection between the chemistry concept and the family properties of elemental groups on the Periodic Table. The activity addresses the HS-PS1-1 Performance Expectation of the Next Generation Science Standards.
Visit: Making An Ion Interactive
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