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Name: ______________________ Hour: ____ Date: ___________ Chemistry: Vocabulary – Chapter 7, Chemical Formulas and Compounds Search the pages of Chapter 7 and anywhere else in your text or on the internet and write the definitions for each of the following terms. 1. octet rule 2. cation 3. anion 4. ionic compound 5. salt 6. monatomic ion 7. binary compound 8. polyatomic ions 9. covalent bond 10. molecular compound 11. molecular formula 12. structural formula 13. organic compound 14. nomenclature 15. oxyanion 16. oxidation number 17. oxidation state 18. formula mass 19. percentage composition 20. empirical formula 21. What is a chemical formula? 22. What is a subscript? 23. What does a subscript represent in a chemical formula? 24. Why would scientists need to determine a compound’s empirical formula? 25. How does an empirical formula differ from a molecular formula? 26. What is the most important factor in determining the chemical properties of a molecule? 27. What are monoatomic ions and give three examples of monatomic ions? 28. Write the ion most typically formed by each of the following atoms: a. K______ b. Ca______ c. S______ d. Cl______ e. Ba______ f. Br______ 29. Write the formula for and indicate the charge on each of the following ions Sodium ion _________ Nitride ion_________ aluminum ion_________ chloride ion_________ iron (II) ion_________ iron (III) _________ 30. How does the chemical formula for the nitrite ion differ from the chemical formula for the nitrate ion? 31. What is meant by the molar mass of a compound? 32. What three types of information are used to find an empirical formula from percentage composition data? 33. What are the prefixes for the numbers 1-10? 34. What are the 8 rules for assigning oxidation numbers? 1. 2. 3. 4. 5. 6. 7. 8.