Page 33 - Demo

Your Safer Source for Science
AP® CHEMISTRY, continued
Buffers in Household Products— FlinnPREPTM Inquiry Lab
Students discover the wide range of buff- ering action using this lab activity. In the introductory activity, students identify the buffering regions in the neutralization of a polyprotic weak acid. The results provide a model for guided-inquiry design of a proce- dure to determine the buffering agents
in eight different household products. Procedures include creating titration curves, calculating pKa values and analyzing the buffer capacity and composition.
AP7665 | Lab Kit & Digital Content | $57.30 EL6030 | Digital Content Only | $14.95
Qualitative Analysis and Chemical Bonding—
FlinnPREPTM Inquiry Lab
Students design a procedure to identify twelve unknown solids based on system- atic testing of their physical and chemical properties. An introductory activity to select measurable properties helps identify the type of bonding in a solid. Students review the properties of four solids with a minimum of four tests. The results provide a basis for a guided-inquiry design of a flow chart proce- dure to identify the twelve unknown solids. AP7664 | Lab Kit & Digital Content | $81.65 EL6021 | Digital Content Only | $14.95
Separation of a Dye Mixture Using Chromatography— FlinnPREPTM Inquiry Lab
All artificial food colors certified by the FDA come from just seven dyes. This lab uses paper chromatography to investigate factors that influence the separation of food dyes. Students compare the separation or reso- lution of FD&C dyes using solvents, then design an experiment to identify a solvent that gives maximum resolution of a dye mixture. Complete for 24 students working in pairs.
AP7661 | Lab Kit & Digital Content | $64.40 EL6020 | Digital Content Only | $14.95
Rate of Decomposition of Calcium Carbonate—
FlinnPREPTM Inquiry Lab
Students measure the gradual evolution of CO2 gas from the decomposition of calcium carbonate with acid and conduct a guided- inquiry kinetics experiment to determine the rate of reaction with different acid concentra- tions. Students compare mass loss and gas generation volume versus time using graphs. AP7648 | Lab Kit & Digital Content | $110.60 EL6025 | Digital Content Only | $14.95
Applications of Le Chatelier’s Principle—FlinnPREPTM Inquiry Lab
Students begin with an activity that introduces the properties of a system at equilibrium: the reversible complex-ion reaction between iron(III) nitrate and potassium thiocyanate. Deliberate “stresses” are added to the system and students analyze the resulting color changes. This procedure provides a model for guided-inquiry analysis of five additional equilibrium systems. Inquiry activities include a reversible acid–base indicator reaction, copper and cobalt complex ions, gas–liquid solubility of carbon dioxide and the solubility of magnesium hydroxide. For convenience, these systems may be set up as lab stations.
AP7659 | Lab Kit & Digital Content | $83.10 EL6028 | Digital Content Only | $14.95
AP® CHEMISTRY I FLINN SCIENTIFIC 31