Qualitative Analysis and Chemical Bonding—Advanced Inquiry Laboratory Kit

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Big Idea 2, Investigation 6, Primary Learning Objective 2.22. Looking for patterns in the properties of solids can help us understand how and why atoms join together to form compounds. What kinds of forces hold atoms together? How do these forces influence the properties of materials? The purpose of this advanced inquiry lab is to design a procedure to identify twelve unknown solids based on systematic testing of their physical and chemical properties. The lab begins with an introductory activity to select measurable properties that will help identify the type of bonding in a solid. Given four solids representing the four types of chemical bonds—ionic, polar covalent, nonpolar covalent, and metallic—students review the properties of each solid with a minimum of four tests. The results provide a basis for a guided-inquiry design of a flow chart procedure that uses physical and chemical property tests to separate and identify twelve unknown solids. Complete for 8 student groups. Common laboratory equipment is required and available separately.