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A Periodic Table of the Isotopes Using Grapher Mapping Software

Atomic weights were previously thought to be constant values with a level of uncertainty; however, the atomic weights for hydrogen, lithium, boron, carbon, nitrogen, oxygen, silicon, sulfur, chlorine, and thallium are now expressed as intervals to more closely reflect the variations these chemical elements have shown.

While this is an exciting discovery, one can only image the magnitude of replacing the now outdated periodic tables that have decorated the inside covers of chemistry books and classroom walls throughout the world. To address this issue, the International Union of Pure and Applied Chemistry (IUPAC), with the assistance of the Committee on Chemistry Education (CCE), created the project, Development of an isotopic periodic table for the educational community. The goal of the project was to create an interactive periodic table to display the new isotopic information. All levels of education could then use the new table and students will have immediate access to the latest information.

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A Graphical Representation of the 2014 West Africa Ebola Outbreak

A Graphical Representation of the 2014 West Africa Ebola Outbreak

In December of 2013, a 2-year-old boy died in Guinea. Researchers believe this boy was the first person to contract and spread the Ebola virus disease that eventually affected more than 25,000 people worldwide. There have been over 25,000 reported cases of the disease, and it is believed that the actual number of cases may be two to three times as what has been reported. The graph below, created in Grapher 11, shows the number of cases reported in each location, and which locations are still reporting new cases of the virus.

Number of reported cases of Ebola

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