Middle School

6th Grade

7th Grade

8th Grade

Nuclear Reactions - Succeed in Physical Science Elements and Compounds - Discoveryschool.com Students will understand the following: * Radioactivity is the property of some elements or isotopes to spontaneously emit particles of energy by the disintegration of their atomic nuclei. * This process is known as radioactive decay. * As a sample of radioactive material decays, it becomes stable and nonradioactive. * The amount of time it takes for half of a sample of radioactive material to decay into a stable substance is called its half-life.