Curated OER
Moles Worksheet
In this chemistry worksheet, students identify and write how many significant figures they would use for each problem. Then they round the answers to the appropriate number of significant figures. Finally, students calculate the mass of...
Encyclopedia of Earth
Encyclopedia of Earth: Barium
Basic information about the element, Barium, atomic number 56. Covers physical and atomic properties, how abundant it is on the Earth, and permissible exposure limits.
Web Elements
Web Elements Periodic Table: Barium
Basic information and data on the element barium. Useful for students at a variety of levels. Includes examples of chemical reactions, as well as information on the properties of this element. Very helpful site.
Wikimedia
Wikipedia: Alkaline Earth Metals
Wikipedia offers a brief but accurate definition of alkaline earth metals. Includes a list of elements in the chemical series.
Other
Scienceviews.com: Minerals and Their Uses
Every segment of society uses minerals and mineral resources everyday. The roads we ride or drive on and the buildings we live learn and work in all contain minerals. Below is a selected list of commonly used metallic and nonmetallic...
Other
Minerals Education Coalition: Minerals Database
This resource provides photographs of and information about various minerals.
Other
Yahoo! Health: Barium Enema
A nice overview from Yahoo! Health of the common medical procedure known as the barium enema. Describes the procedure and how and why it is used. Also includes preparations and risks involved. Images are also provided.
Chemicool
Chemicool: Barium
A very easy to follow site from Chemicool with all sorts of clearly presented data on barium. Not flashy, but thorough and clear,