Curated OER
Unit 4 - Periodic Table
There are 17 multiple choice questions on this periodic table test. The focus is on properties of the elements by group and period. The exam is not formatted well, making it a little difficult to read. There is also a typographical...
Soft Schools
Soft Schools: Periodic Table Groups Quiz
Take an interactive quiz over the groups on the periodic table of elements. After completing the quiz, check your score, and then revisit any incorrect question for further review.
CK-12 Foundation
Ck 12: Physical Science: Alkaline Earth Metals
[Free Registration/Login may be required to access all resource tools.] Group 2 elements and their properties.
Corrosion Source
Corrosion Source: Erbium
This site, which is provided for by Corrosion Source, gives a summary of basic physical data on erbium. This is a great site to check out for information on the subject.