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T Trimpe 2002 Element of Protons of Electrons of Valence Electrons Oxidation Number SodiumChlorineBerylliumFluorineLithiumOxygenPhosphorus 3 Sodium Oxygen4 Sodium Chlorine5 Calcium. Anions. Cations. Naming Ions. Naming Ionic Compounds. Writing Ionic Formulas. Identify some Anions and . Cations. Anions. Cations. Metals Lose Electrons . (. Cations. = +). Nonmetals tend to gain electrons (Anions = -). 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.. 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. Bonding Discussion. Bonding. . Ionic. . Covalent. . Metallic. Determined by difference in Electronegativity between atoms.. Ionic . Compounds. Crystalline . solids (made of ions) . High melting and boiling points . 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. SNC2D – Academic Science. Learning Goals. Use . Lewis dot diagrams to illustrate how a compound forms between a metal and a . non-metal.. Ions are formed when electrons are gained or lost. Where do electrons that are lost go?. Students know . atoms combine to form molecules by sharing electrons to form covalent or metallic bonds or . by exchanging electrons to form ionic bonds. . . . Students know . salt crystals, such as . Net ionic equations are useful in that they show only those chemical species directly . participating in . a chemical . reaction. The keys to being . able to . write net ionic equations are the ability to recognize monatomic and polyatomic ions, . Michael. Tian. Koya. Ionic Bonding. Definition: . The complete transfer of valence electron(s) between atoms. It’s a type of chemical bond that creates two oppositely charged ions. Typically an ionic bond happens between a metal and a non-metal, where the metal loses electrons to the non-metal, resulting in a cation and a anion.. Ionic bonds form a . giant lattice structure. Sodium chloride is an ionic compound formed by the reaction between the metal sodium and the non-metal chlorine.. During the reaction, one electron is transferred from each sodium atom to each chlorine atom..