PPT-Atoms, Ions and Molecules

The Building Blocks of Matter Chapter 2 Chapter Outline 21 The Rutherford Model of Atomic Structure 22 Nuclides and Their Symbols 23 Navigating the Periodic Table 24 The Masses of Atoms Ions and Molecules. 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.. Drawing Molecules on Paper. Lewis Structures (or Dot Structures) are one way we draw molecules on paper. Since paper is 2-D and molecules aren’t, it’s not a perfect way to represent how molecules bond…but it’s a good way to begin to visualize molecules. 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 . 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.. 2.3: Atomic structure & symbolism. Write & interpret symbols that depict atomic number, atomic mass and charge of atoms & ions. Define the atomic mass unit & average atomic mass. Calculate average atomic mass & isotopic abundance. What are Atoms?. Atoms. are the building blocks of matter made up of Protons, Neutrons & Electrons.. Inside the Atom. A . proton. is a positively charged (+) particle in the center of the atom. Lesson 1. (b) the concept of . monomers. and . polymers. and the importance of . condensation. and . hydrolysis. reactions in a range of biological molecules . (. c) the chemical elements that make up biological molecules . DE Chemistry. Dr. Walker. Timeline. B.C.. 400 B.C. . Demokritos. and . Leucippos. . use the term ". atomos. ” . 1500's. Georg Bauer: systematic metallurgy. Paracelsus: medicinal application of minerals.