PPT-Chapter 2 Atoms, Molecules, and Ions

DE Chemistry Dr Walker Timeline BC 400 BC Demokritos and Leucippos use the term atomos 1500s Georg Bauer systematic metallurgy Paracelsus medicinal application of minerals. The ions are arranged in a lattice. There is attractive electrostatic forces between the ions which are very strong e.g. sodium chloride ionic lattices. . Give two properties of giant ionic structures. . BONDING. A guide for A level students. KNOCKHARDY PUBLISHING. 2008 . SPECIFICATIONS. INTRODUCTION. This . Powerpoint. show is one of several produced to help students understand selected topics at AS and A2 level Chemistry. It is based on the requirements of the AQA and OCR specifications but is suitable for other examination boards.. Chapter 2 BLB 12. th. Expectations. Recognize important steps in the discovery of the atom and its structure.. Work with isotopes.. Learn about the periodic table.. Differentiate between molecular and ionic compounds.. The Building Blocks of Matter. Chapter 2. Chapter Outline. 2.1 The . Rutherford Model of . Atomic Structure. 2.2. . Nuclides and Their Symbols. 2.3 . Navigating the Periodic Table. 2.4 The . Masses of Atoms, Ions, and Molecules. CHEMICAL BOND – A force that holds two or more atoms together as a unit. Individual atoms will naturally bond together to achieve a lower energy state (to be more stable). 3B-1 (of 42). TYPES OF BONDS. Part 2. 1 dozen = 12 items. Let’s do some calculations. I have 12 dozen, how many eggs. ?. 12 x 12 = 144 eggs. I have 57 dozen, how many doughnuts. ?. 57 x 12 = 684 doughnuts. I have 10 dozen, how many golf balls. How elements become charged. How elements become charged. ION – A charged atom. All elements on the periodic table are NEUTRAL because they have the same number of . protons (+) and electrons (-). MACROSCOPIC SCALE. Elements combine to make compounds.. ATOMIC SCALE. Atoms combine to make molecules, or extended structures.. What we’ll cover…. Compound Formulas. Ions. Monatomic. Polyatomic. Ionic Compounds. Moles and Mass. The . molar mass . gives us the relationship between the . number of moles . and the . mass of an element or compound. .. We can . use the molar mass . to . calculate . the . mass. or . Matter, Measurement,. and Problem Solving. What do you think . is the most important idea in all of human knowledge?. If we limit ourselves only to scientific answers, it would be this. :. The . properties of matter are . Chapter 17- How Atoms Bond and Molecules Attract The Big Idea: Atoms and molecules are sticky 17.1 Electron-Dot Structures Valence electrons= electrons in outermost shell Electron- dot structures: a series of dots surrounding an atomic symbol Chapter 11 – Transmembrane Transport of Ions and Small Molecules Chapter 11 – Transmembrane Transport of Ions and Small Molecules 11.1 Overview of Transmembrane Transport 11.2 Facilitated Transport of Glucose and Water The Mole602 X 1023in scientific notationThis number is named in honor of Amedeo Avogadro 1776 18561 dozen cookies 12 cookies100 cookies 102 cookiesA million of cookies 106 cookies1 mole of cookies Early in the 19. th. century John Dalton developed atomic theory. His theory explained the best available experimental data at that time. His theory has been modified since then with the discovery of other data, but his work was the initial ground work that we will examine first..