PPT-Discovery of the Nucleus: Protons and Neutrons

Ernest Rutherford Determined the structure of the atom First to split the atom Hans Geiger Inventor of the Geiger counter to measure radiation Ernest Marsden Found that a few scattered alphas at angle over 140 degrees from the beam. . Stations. . Nuclear power station. s. Introduction. . What’s in a Nucleus. The nucleus of an atom is made up of . protons. and neutrons. each is about 2000 times the mass of the electron, and thus constitutes the vast majority of the mass of a neutral atom (equal number of protons and electrons). 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. Nuclear Physics. L-35 Nuclear structure. what’s inside the nucleus. what holds it together. isotopes. radioactivity. half-life. L-36 Nuclear energy. nuclear fission. nuclear fusion. nuclear reactors. Isotopes. Isotopes are atoms that have the same number of protons but different numbers of neutrons. Most elements in the first two rows of the periodic table have at least 2 isotopes with one being more common than the other. Ernest Rutherford. Determined the structure of the atom. First to split the atom. Hans Geiger . Inventor of the Geiger counter to measure radiation. Ernest Marsden. Found that a few scattered alphas at angle over 140 degrees from the beam. All atoms of an element have the same number of protons and the same atomic number.. Learning Goal . Given the atomic number and the mass number of an atom, state the number of protons, neutrons, and electrons.. Atoms and Isotopes. What you need to know about Atoms . and Isotopes:. Matter. Molecules. Elements. Chemical reaction. Periodic Table. The Atom. Parts of an atom. Isotopes. Unstable isotopes. Scientists and discoveries. editing this presentation, remember to be compliant. Do not state or imply that any given product is suitable for any specific ailment. Please see the . dōTERRA. Quick Claims Guide and Approved Claims List on doterratools.com. You may now delete this disclaimer.. Monday. What are the Atomic Numbers of these elements. Antimony. Mercury. Potassium. Chlorine. Tuesday. How many protons, neutrons, and electrons would a neutral atom of Phosphorus 31 have?. Wednesday. Over the past century scientist have discovered that the atom is composed of 3 subatomic particles:. Protons. Neutrons. Electrons. Checking for understanding. Draw this diagram. Label all subatomic particles and include their charges.. Examples:. Hydrogen. Carbon. Chlorine. Titanium. Atom. Democritus (450 B.C.). If . you kept cutting a substance in half forever, eventually you would end up with an “. uncuttable. ” particle. . John Dalton (1800). Tunneling. Alpha-decay, radioactivity. Thursday. :. Radioactivity. Scanning Tunneling Microscopes. PH300 . Modern . Physics SP11. “I am one of those who think like Nobel, that humanity will draw more good than evil from new discoveries.”. . . For elements of higher atomic number, the ratio rises to approximately 1.6 to 1 . As a nuclide departs from this stable ratio, changes in the nucleus occur which tend to bring the product to a more stable arrangement. . What’s Inside an Atom?. An atom is made up of a team of three players:. . protons, neutrons, and electrons. . They each have a. . charge, mass, and a location. Protons + Neutrons . collectively called nucleons.