PPT-Chapter 17- How Atoms Bond and Molecules Attract

Chapter 17 How Atoms Bond and Molecules Attract The Big Idea Atoms and molecules are sticky 171 ElectronDot Structures Valence electrons electrons in outermost shell Electron dot structures a series of dots surrounding an atomic symbol. Chapter 9 ~ most compounds, including those in living organisms, are covalently bonded. What You’ll Learn. I will analyze the nature of a covalent bond. I will name covalently bonded groups of atoms. 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. 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. Organic Molecules. contain. CARBON. !. http://www.npr.org/news/specials/climate/video/. EXCEPTION!!. Carbon dioxide . (CO. 2. ) . i. s . NOT. a. n organic compound!. Properties of carbon. . 4 . valence electrons. Chemical bonding. Chemical Bonding. Diamond. Silicon dioxide. Graphite. Ionic Bond / metallic bond / covalent bond. Nature of the bond. Physical properties . Melting point / boiling point. Electrical conductivity. Friedland. and . Relyea. Environmental Science for AP. ®. , second edition ©2015 W.H. Freeman and Company/BFW . AP. ® . is a trademark registered and/or owned by the College . Board. ®. , . which was not involved in the production of, and does not endorse, this product.. F. 2. yellow gas. very reactive. toxic . Cl. 2. green gas. very reactive. toxic . Br. 2. orange liquid. very reactive. toxic . often used as a solution in water - bromine water, Br. 2. (. aq. ). I. 2. Matter takes many forms in nature. : In this chapter, we are going to learn to distinguish the type of compound that we have already studied, the “. ionic. . compound. ” (which contains oppositely-charged particles: metal . Jennie L. Borders. Section 8.1 – Molecular Compounds. A . covalent bond. is formed between atoms held together by . sharing. electrons.. A . molecule. is a group of atoms joined by . covalent bonds. 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 . A Quick Review….. A bond results from the attraction of nuclei for electrons. All atoms are trying to achieve a . stable octet. IN OTHER WORDS. the protons (. +). in one nucleus are . attracted to the electrons (-). Jennie L. Borders. Section 8.1 – Chemical Bonds, Lewis Symbols, and the Octet Rule. Whenever two atoms or ions are strongly attached to each other, we say there is a chemical bond between them.. There are three general types of chemical bonds: ionic, covalent, and metallic.. p. olarity. CHE2060 Topic 1: Atoms, orbitals & bonding. Bond polarity & . electronegativity. Covalent bonds can be either . polar. or . nonpolar. depending on how equally. (or unequally) their e- pair bonds are shared between the 2 bonded atoms.. The Covalent Bond. Section 9.1. Worldwide, scientists are studying ways to increase food supplies, reduce pollution, and prevent disease. Understanding the chemistry of compounds that make up fertilizers, pollutants, and materials that carry genetic information is essential in developing new technologies in these areas. An understanding of the chemistry of compounds requires an understanding of their bonding..