http://www.ck12.org Chapter 2. Matter
Vocabulary
- ion: Positively or negatively charged form of an atom that has lost or gained electron(s).
Explore More
At the following URL, scroll down to the middle of the page and download “Ion Worksheet.” Then fill in the missing
information in the worksheet.
http://www.powayusd.com/teachers/kvalentine/worksheetspage.htm
Review
- Why are atoms neutral in electric charge?
- Define ion.
- Compare and contrast cations and anions, and give an example of each.
- Describe how ions form.
- List properties of ions.
- The model in the illustration below represents an atom of lithium (Li). If the lithium atom becomes an ion,
which type of ion will it be, a cation or an anion? What will be the electric charge of this ion? What will the
ion be named? What symbol will be used to represent it?