PPT-The Atomic Nucleus & Radioactive

Decay Chapter 10 Student Learning Outcomes Analyze radioactive decay and its results D ifferentiate between nuclear fission and fusion Is Radiation Dangerous Major Constituents of an Atom. On your bell work . sheet, answer the following.. When . are zeros significant? . . When . do you use the fewest number of Significant Figures?. Objectives. The Structure of the Atom. Properties of Subatomic Particles. 2. The Atom. All matter is composed of atoms.. An atom is composed of three subatomic particles: electrons (-), protons (+), and neutrons (0). The nucleus of the atom contains the protons and the neutrons (also called nucleons.). In the nuclear equation for alpha decay, the mass number of the new nucleus decreases by 4 and its atomic number decreases by 2.. Learning Goal . Write a balanced nuclear equation showing mass numbers and atomic numbers for radioactive decay.. In the nuclear equation for alpha decay, the mass number of the new nucleus decreases by 4 and its atomic number decreases by 2.. Learning Goal . Write a balanced nuclear equation showing mass numbers and atomic numbers for radioactive decay.. Introduction to Nuclear Chemistry. Nuclear chemistry is the study of the structure of and the they undergo.. When sedimentary rock is deposited in layers it is deposited horizontally.. Scientists use this “Principle of Original Horizontality” to help them determine the age of the layers.. The older layers of rock are found below the younger layers of rock.. Section 21.1 Types of Radioactivity. Objectives: Analyze Common Sources of Background Radiation, Compare and Contrast Alpha, Beta and Gamma Radiation, Apply the concept of Half-Life of a Radioactive Element. Radiation. . A high-speed electron ejected from a nucleus during radioactive decay is called a (an). A) alpha particle.. B) beta particle.. C) gamma ray.. D) none of the above are correct.. . The ejection of an alpha particle from a nucleus results in:. A person working with radioisotopes wears protective clothing and gloves and stands behind a shield.. 2. Radioactive Isotopes. A . radioactive isotope . has an unstable nucleus. emits radiation to become more stable. Following the discovery of radioactivity by Henri Becquerel in 1896, many scientists were keen to find out more about it and understand where it came from.. In a radioactive atom, the nucleus is unstable and so it emits particles or waves of radiation to form a more stable atom. . College of Pharmacy – . Karary. University. Department of Pharmaceutical Chemistry. Radiopharmaceuticals. . By . Dr. . Sarab. . Alazawi. Atomic structure. The atom is the smallest part of matter that represents a particular element.. There . are three major atomic (or subatomic) particles: Protons, Neutrons and Electrons. Table below summarizes the characteristics of these three subatomic particles. The masses of the subatomic particles are listed in two ways, grams and . Atom structure. 1. 2. 3. What is the radius of an atom?. What is the radius of a nucleus?. 1x10. -10. m. 1x10. -15. m. Atom structure. An isotope is an element with a different number of neutrons. Isotope. . . Stability of Isotopes. Transmutation. June 8-10, 2020. The ratio of neutrons to protons in the nucleus determines the stability of a specific nucleus. . Too many neutrons = unstable. If any element has an unstable isotope, it is radioactive and called a radioisotope. .