PPT-How is radioactivity related to atomic structure?

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 . THINK ABOUT IT – answer on your warm-up sheet or scratch paper. W. hat are the 3 main groups on the periodic table?. What are the 3 main parts of an atom?. You need to get . 3. different . color pencils. For . B.Sc. Chemistry (General), Part- I. By. Dr. . Kakoli. . Banerjee. Department of Chemistry. Aims and Objectives. Definition of Radioactivity . Discovery of Radioactivity- The Pioneers. Cause of Radioactivity- Nuclear Instability. Pierre Curie was already a famous scientist before he married Marie Sklodowska in 1895.  This famous couple did not only find true love, they also discovered radium and polonium.  For their groundbreaking research in radioactivity, the couple were awarded the 1903 Nobel Prize in physics.  It was Marie Curie who coined the term "radioactivity", and in her honor, the 1910 Radiology Congress chose the curie as the basic unit of radioactivity.  Pierre died from being run over by a horse drawn wagon, but Marie continued their research, and was eventually awarded a second Nobel Prize, the 1911 prize for Chemistry.  She died in 1934, suffering from pernicious anemia which had undoubtedly been the result of years of radiation exposure.. Chemistry. Learning Goals . To be able to . explain and draw atomic structure. Elements. Elements are the . building blocks. of all . matter. on Earth. Elements are made up of . atoms. Differences in . Textbook Pages 4-5. Lesson Objectives. Appreciate that there are various models to illustrate atomic structure. Know that early models of atomic structure predicted that atoms and ions with noble gas electron arrangements should be stable. Ar. cluster ions – an . ab initio . study. 5-th School-Conference on Atomistic Simulation of Functional Materials. J.G. . Korobova. , . A.E . Ieshkin, . V.. S. . Chernysh. Moscow . State University, Physical Department. The lab technician shown here is using a magnifying lens to examine a bacterial culture in a petri dish. When scientists cannot see the details of what they study, they try to obtain experimental data that help fill in the picture.. Significance and Impact. The work provides a pathway for optimizing Li-rich cathode performance by controlling how their atomic structure evolves as a battery charges and discharges.. Research Details. Oxygen, Water, Penicillin, . Carbon Dioxide, Rust and More. . or. Odds and ends of chemistry that should provide insight into chemistry. Intriguing ideas including the . iso. words (isotopes, isomers). -The nucleus is at the centre of the atom and contains the protons and neutrons. Protons and neutrons are collectively known as . nucleons.. The sub-atomic particles:. Protons. are positively charged . Elements, Mixtures and Compounds. Atoms and molecules. Remember that an . element . is one type of atom, like carbon, gold or chlorine. We will look at three ways that atoms can exist.. 1. Single atoms. Do now activity. :. Label the 4 parts of this atom?. What charge is given by the blue particle?. What mass is given to the black particle?. What is the overall charge given to particles in the orange circle?. In your notes…. Draw a model of an atom that best represents each component of that atom.. Foundations of Atomic Theory. Particle Theory of Matter. Democritus in 400 B.C.. Stated that nature’s basic particle was the atom (“indivisible” in Greek). . Review. Pollution & Recycling. Projects?. Next Physical Science Class. Jan. 8. th. Finals Class Jan. 15. th. 4 pm. .5 for passing the Final. All Power Points will be on line on my web site. You will be given back your notes, you can use the .