DATE: NAME: BLM 2-1 SCIENCE INQUIRY CLASS: Writing Names and Formulas of Binary Ionic Compounds Goal Demonstrate your ability to write the names and formulas of chemical compounds and your ability to distinguish between ionic and molecular compounds. What to Do In the spaces below, record your answers to the questions in Investigation 2-A: Writing Names and Formulas of Binary Ionic Compounds. 1. Circle the binary compounds in the following list. (a) HCl (b) SO3 (c) MgCO3 (d) hydrogen sulfide (e) sodium hydrogencarbonate 2. (a) Which types of elements combine to form binary ionic compounds? (b) Which types of elements combine to form binary molecular compounds? 3. Identify whether each name or formula represents an ionic or molecular substance. (a) sodium sulfide (b) PCl3 (c) nitrogen dioxide (d) zinc oxide (e) MgI2 Copyright © 2004 McGraw-Hill Ryerson Limited. Permission to edit and reproduce this page is granted to the purchaser for use in her/his classroom. McGraw-Hill Ryerson shall not be held responsible for content if any revisions, additions, or deletions are made to this page. DATE: NAME: BLM 2-1 CLASS: Writing Names and Formulas of Binary Ionic Compounds (continued) SCIENCE INQUIRY 4. Complete the following table. Element Anion Name Symbol Name Symbol fluorine F fluoride F– chloride bromide oxide sulfide nitride 5. Complete the following table. Formula Total charge on cation(s) Total charge on anion(s) Correct () or incorrect (X) formula? Correct formula and name of compound (a) LiO (b) MgO (c) K2S (d) AlBr3 (e) NaN3 Copyright © 2004 McGraw-Hill Ryerson Limited. Permission to edit and reproduce this page is granted to the purchaser for use in her/his classroom. McGraw-Hill Ryerson shall not be held responsible for content if any revisions, additions, or deletions are made to this page. DATE: BLM 2-1 SCIENCE INQUIRY NAME: CLASS: Writing Names and Formulas of Binary Ionic Compounds (continued) 6. Work through the examples on page 49 of your SCIENCEFOCUS 10 textbook. In point form, outline how to determine the formula of a compound. 7. Complete the following table to write the formula of each compound. Name of compound Cation Anion Formula (a) beryllium fluoride (b) sodium nitride (c) calcium sulfide (d) aluminum chloride (e) lithium oxide (f) magnesium nitride (g) gallium sulfide (h) barium bromide Copyright © 2004 McGraw-Hill Ryerson Limited. Permission to edit and reproduce this page is granted to the purchaser for use in her/his classroom. McGraw-Hill Ryerson shall not be held responsible for content if any revisions, additions, or deletions are made to this page. DATE: NAME: BLM 2-1 SCIENCE INQUIRY CLASS: Writing Names and Formulas of Binary Ionic Compounds (continued) 8. Copy the examples on page 49 of your textbook, and explain them to a partner so you will remember how they work. 9. Complete the following table to find the charge on the cation in these compounds. Decide if your answers are reasonable before you move on to step 10. Compound Charge on cation (a) Cu2S (b) Cr2O3 (c) PbO2 (d) NiCl2 (e) CrN (f) HgO 10. Complete the following table by adding the missing Stock system names. Formula Ion Name FeCl3 Fe3+ iron(III) chloride FeO Fe2+ Cu2S Cu+ PbO2 Pb4+ Copyright © 2004 McGraw-Hill Ryerson Limited. Permission to edit and reproduce this page is granted to the purchaser for use in her/his classroom. McGraw-Hill Ryerson shall not be held responsible for content if any revisions, additions, or deletions are made to this page. DATE: NAME: BLM 2-1 CLASS: Writing Names and Formulas of Binary Ionic Compounds (continued) SCIENCE INQUIRY 11. Complete the following table to write the chemical formula for each compound. Name of compound Cation Anion Chemical formula (a) copper(I) oxide (b) lead(IV) bromide (c) iron(III) sulfide (d) nickel(III) fluoride (e) manganese(IV) sulfide Analyze 1. Explain why you must use the Stock system to name ionic compounds containing transition metals. In which cases do you not need to use the Stock system to name an ionic compound? Explain your answer. 2. There is something wrong with the name written beside each of the following compounds. In each case, explain why the name is wrong, and then write the correct name. Formula Incorrect name (a) Ti2O3 dititanium trioxide (b) NaCl sodium(I) chloride (c) CuCl2 copper chloride (d) NO2 nitrogen(IV) oxide Explanation Correct name Copyright © 2004 McGraw-Hill Ryerson Limited. Permission to edit and reproduce this page is granted to the purchaser for use in her/his classroom. McGraw-Hill Ryerson shall not be held responsible for content if any revisions, additions, or deletions are made to this page.