PPT-Ionic Compounds and Bonding

SNC2D Academic Science Learning Goals Use Lewis dot diagrams to illustrate how a compound forms between a metal and a nonmetal Ions are formed when electrons are gained or lost Where do electrons that are lost go. Molecular Geometry. Ch. 6 Sections 1-4 Review. In general, what determines whether atoms will form chemical bonds?. Atoms will form a chemical bond if their potential energy is lowered in doing so.. Describe the difference between ionic and covalent bonding.. Co = Together. The Octet Rule. The octet rule says that all atoms want to have eight valence electrons, like the noble gases.. One way that atoms can follow the octet rule is by giving and taking electrons… ionic bonding. Ionic w/Transition. Metals. Ionic w/ Polyatomic. Covalent. Writing. Formula from Name. Write out ions, . criss. cross number. of charge to make subscripts, reduce. Write out ions, . criss. cross number. Chapter 4.10,4.11 and 5. Combining Elements. When we begin combining elements we make compounds.. Two types. Non-metal and metal. Non-metal and non-metal. Each type has unique physical and chemical properties. . and Structure. IB Chemistry. Topic 4. . Bond - A force that holds . atoms . together and . makes . them . function as a . unit.. 4.1 Ionic Bonding. An . ion. is a charged particle. Ions form from atoms or from groups of atoms by . Very Important!. Going down the periodic table the properties are affected by INCREASING SIZE and INCREASING DISTANCE between the nuclei and the valence . e-s. Going across a period, properties are affected by the DIFFERING VALENCE, NUCLEAR CHARGE and CHARGE ON THE SPECIES. Covalent bonding. Ionic bonding. Ionic Bonding. Bonding as you’ve never imagined it. http://www.youtube.com/watch?v=BCYrNU-7SfA. Objectives. To consider the features of ionic and covalent bonds, and the compounds they make. Electrons are transferred from an atom of low electronegativity to one of high electronegativity. Anion (-) and cation ( ) formed. Opposite charges attract – called an . electrostatic force. Formula Unit. Chapter 7. An . ion. is an atom that has gained or lost electrons from the valence shell.. Valence electrons. are the electrons contained in the highest occupied energy level. These electrons will mostly determine the chemical properties of the element. Steps:. 1.) . Cation. is written before anion.. 2.) Charges must cancel. (ionic compounds are neutral). 3.) Atoms must be in smallest whole number ratio.. Write the formula units for the following ionic compounds: 1.) lithium chloride, 2.) strontium oxide, 3.) ammonium phosphate.. Do Now: Identify ionic compounds. CO. 2. MgCl. 2. NH. 4. Cl. NaOH. NH. 3. CH. 4. CuSO. 4. HF. Magnesium’s outer shell is now empty. Fluorine’s outer shell is now full. Lewis Diagrams for Ionic Compounds. Chapter 5: Molecules and Compounds. Learning Goals. Distinguish . between common and systematic names for compounds. . Name . binary ionic compounds containing a metal that forms only one type of ion.. Reading. for Tuesday 8/31: Chapter 2 section 5 and Chapter 3 section 1. Homework. WS. 2. : due Tuesday 8/31 (8:00 AM) . WS. 3. : due Thursday 9/2 (8:00 AM). Lab. . Today: . EXP 2 – Nomenclature. Chemical Interactions Occur between the Valence Electrons. Dots. : represent . valence electrons. When atoms combine to make molecules, they form . chemical bonds.. Valence . electron . interaction.