3.56: Radioactivity Difficulty Level: At Grade Created by: CK-12 Estimated3 minsto complete % Progress Practice Radioactivity MEMORY METER This indicates how strong in your memory this concept is Practice Progress Estimated3 minsto complete % Estimated3 minsto complete % Practice Now MEMORY METER This indicates how strong in your memory this concept is Share Add to Library Turn In Read Practice Resources Details Loading... Notes/Highlights Having trouble? Report an issue. Color Highlighted Text Notes Show More Vocabulary Language: English ▼ English radiation Energy emitted by the nucleus of a radioisotope or an accelerating particle; transfer of energy by electromagnetic waves that can travel across space as well as through matter. radioactivity Ability of an atom to emit charged particles and energy from the nucleus. Image Attributions Show Hide Details Description Radioactivity: how it was discovered, definition of radioactivity and radiation and examples of radioactive elements. Learning Objectives None Difficulty Level: At Grade Authors: Jean Brainard, Ph.D. Tags: antoine henri becquerel becquerel radiation (3 more) radioactivity SCI.CHE.610.L.1 SCI.PSC.161.L.1 Subjects: science Physical Science Concept Nodes: SCI.PSC.161 (Radioactivity) Grades: 7 , 8 Date Created: Nov 14, 2012 Last Modified: Sep 13, 2016 Vocabulary None Save or share your relevant files like activites, homework and worksheet.To add resources, you must be the owner of the Modality. Click Customize to make your own copy.