PPT-Atoms

and Periodic Table Antoine Lavoisier Law of Conservation of Matter matter can not be destroyed nor created Daltons Atomic Theory All elements are composed of atoms Atoms of the same element are identical Atoms of any one element are different than atoms of another element. At the end of this lesson, you need to draw . a diagram for each model showing the evolution of atomic theory:. ". Plum-Pudding" Model. Rutherford . Atom. Rutherford-Bohr . Atom. Charge-Cloud . Model. a Record . Power Density. Alfred . Hubler. , Department of Physics, University of Illinois at Urbana-Champaign. CNLS Seminar, . Los . Alamos National Lab, July . 30. th. , . 2013. Nano. capacitor arrays with high energy density . Molecules. Elements. Compounds. Atom. The smallest particle that can still be identified as the matter it came from.. Atoms cannot be created or destroyed.. Consists of Protons (+), Electrons (-), and Neutrons (N).. Flame Test . Flame Test. According to Bohr theory of the atom, electrons may occupy only specific energy levels. Electrons in atoms jump from their ground state to excited states by absorbing energy. Eventually these electrons fall back to their ground state, reemitting the absorbed energy in the form of light. Because each atom has a unique structure and arrangement of electrons, each atom emits a unique spectrum of light. This characteristic light is the basis for the chemical test known as a flame test. In this test, being placed within a flame excites the atoms. As they reemit the absorbed energy in the form of light, the color of the flame changes. For most metals, these changes are easily visible. However, even the presence of a tiny speck of another substance can interfere with the identification of the true color of a particular type of atom. . . are the smallest components of nature. with the properties of a given substance.. Electrons. (negative charge). Protons. . (positive charge). Neutrons. . (no charge). For any given element:. Atomic Number . Darrick. Chang. ICFO – The Institute of Photonic . Sciences. Barcelona, Spain. School on Quantum Nano- and Opto-Mechanics. July 8, 2016. Motivation. Optomechanics: unprecedented levels of control over interactions between motion and light. There are about 100 different types of atoms. An element is a substance which contains only one type of atom. Atoms. Atoms. The Periodic Table. The Periodic Table. Element, Compound, Mixture. Element, Compound, Mixture. Essential Questions:. What is. . the basic structure of atoms? . How is an atom’s mass calculated? . Which subatomic particles are electrically charged?. .. Essential Questions:. 4. Where are the three main subatomic particles located?. Atoms. . are the smallest unit of matter. . Matter. . is anything that has mass and takes up space. . A . ball is matter, water is matter, even the air you breathe is matter!. What is an atom. ? (cont.). Atoms are composed of protons, neutrons and electrons. These subatomic particles are charged….. Atoms make elements… Elements can’t be broken down into anything simpler. . Examples:. Carbon= C. How and why has the Atomic Theory changed over time? . How can we describe the molecular motion of the states of matter? . Objectives. Students will explain that atoms are the smallest unit of an element and are composed of subatomic particles.. How and why has the Atomic Theory changed over time? . How can we describe the molecular motion of the states of matter? . Objectives. Students will explain that atoms are the smallest unit of an element and are composed of subatomic particles.. 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). Develop and use models to illustrate the structure of atoms, including the subatomic particles with their relative positions and charges.. Date. Essential Question(s). 1) . What is matter?. 2) . What is the basic structure of atoms?.