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. 7.3 in your textbook. How atoms combine. Atoms with a full valence shell are very stable . Only the Noble gases are considered stable and therefore unreactive. Elements that have unfilled valence shells combine with other elements. 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.. Isotopes. Isotopes. : atoms of the same element that have different numbers of neutrons. Two isotopes of an element will have the same atomic number, but different mass numbers (and atomic masses). CARBON (above right). C2 1.1 Chemical bonding. Key words:. A . compound. contains two or more elements which are chemically combined. Covalent. bonding – sharing electrons. Ionic. bonding – transferring electrons. Chemical bonding: . C2 1.1 Chemical bonding. Key words:. A . compound. contains two or more elements which are chemically combined. Covalent. bonding – sharing electrons. Ionic. bonding – transferring electrons. Chemical bonding: . 13a. Physical . properties of . solids are largely influenced by . the . structures.The. . larger the degree of association is, . the . less volatile is the . compound:. WCl. 6 . (. b.p. .: 286 . o. 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 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.. Atoms are neutral. Protons = Electrons. There are special kinds of atoms..... Ions. Isotopes. Ions. An Ion is an atom that has gained or lost ELECTRONS, so it has an overall charge. If an atom gains electrons, it’s overall charge becomes negative. If an atom loses electrons, it’s overall charge becomes positive. . Dr John Mitchell. ID1004: Approaches to Reality. For Years People Wondered …. What is the World Made of?. What is Matter?. I. s Water Made of the Same Stuff as Rock?. Is Matter Continuous?. Is Matter Continuous?. In . a chemical equation, like the one below, you will notice that there are regular-sized numbers in front of some of the molecules and small numbers after certain atoms within a molecule. . The little number is called the . What is the atmosphere?. Dry air is a mixture of gases. Our atmosphere is made up of the following:. 78% Nitrogen. 21% Oxygen. 1% Argon. 0.04% Carbon Dioxide . Chemicals of air consists of atoms and small molecules. There are weak forces of attraction between the molecules so these chemicals have low melting and low boiling points.. 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.