Chemistry • Naming & Bonding Unit Part I - Ionic compound focus (Chapters 7/9) Chapter 7.1 Objective: 1. Describe the difference between atoms and ions. • define cation and anion • describe what elements form cations and what elements form anions • determine the number of electrons gained or lost when forming an ion. 2. Define valence electrons • determine the number of valence electrons for any representative element • draw electron dot structures for Group A (representative) elements. 3. Explain what a stable electron configuration is • define the octet rule • explain how elements achieve stable electron configurations 7.1, 9.1 4. Determine ionic charges of the elements • determine charges for representative elements • determine stock names and charges for ions with multiple charges 9.1 5. Define the term polyatomic ion • memorize names, formulas, & charges of selected common polyatomic ions 7.2 6. Explain how ionic compounds are formed • draw dot diagrams showing the movement of electrons in the formation of ionic compounds • 7. Name and identify formulas for ionic compounds with elemental ions and with polyatomic ions. 7.2, 9.2 7.2 8. Describe properties of ionic compounds: crystalline structure, electric conductivity. 9.5 9. Define the Laws of Definite and Multiple Proportions 7.3 10. Define the term metallic bond • explain how electrons in these bonds allow for malleability and conductivity • define alloy Part II - Covalent (Molecular) compound focus (Chapters 8/9) Source Objectives - The student will: 8.2 1. Define single covalent bond • draw structural formulas for covalent bonds • define the terms shared pair and unshared pair 2. Define double and triple covalent bonds • define diatomic molecule • memorize diatomic elements on the periodic table • draw structural formulas for covalent bonds 3. Define covalent (molecular) compounds • draw structural formulas for covalent (molecular) compounds 4. Define resonance • draw resonance structures for a given molecule or polyatomic ion 9.3 5. Name and identify formulas for molecular compounds • memorize prefixes for molecular compounds 8.4 6. Describe properties of molecular compounds • compare and contrast properties of molecular compounds with those of ionic compounds 9.4 7. Name and identify formulas for acids • define the term acid • memorize three rules for naming acids 7,8,9 8. Name and write formulas for all types of compounds • based on the name and/or formula of a compound, be able to tell whether it is a molecular compound, ionic compound, or an acid. 7,8,9 3. Define the terms molecule, molecular compounds, ionic compounds. 7,8,9 4. Define the term chemical formula • differentiate between a molecular formula and formula unit • compare properties of molecular and ionic compounds