The Discovery Of Radioactivity: The Dawn of the Nuclear Age

In this radioactivity worksheet, students write the mass number and atomic number for the missing element in the reactions. Students identify the isotope that is more stable and determine the half-life of the isotope. This worksheet has...

In this chemistry review learning exercise, students explore their knowledge of solutions, acid and bases, nuclear reactions, and radioactive decay as they answer 33 matching, fill in the blank, and short answer questions.

Some 4.565 billion candles would be needed for a birthday cake for Earth. Young scientists view a video to learn about historical attempts to determine the age of Earth. They see how advances in radioactive dating led to the currently...

How are new elements created? Are they really new? Journey to the end of the periodic table with a video from the American Chemical Society's Reactions playlist. The narrator describes the conditions under which new elements are formed...