Guided Inquiry Experiments for General Chemistry

Inquiry Experiments for General Chemistry: Practical Problems and Applications is a lab manual designed for students in introductory chemistry courses. The manual is the result of several projects funded primarily by the National Science Foundation and developed chiefly at the University of Puerto Rico at Cayey, Inter American University of Puerto Rico, Metropolitan Campus, and the University of Michigan at Ann Arbor. The experiments have been thoroughly tested with undergraduate non-chemistry and non-science majors as well as with pre-med, engineering, science (including chemistry), and future teachers majors. Successful use of the experiments has occurred outside the institutions of origin including secondary institutions, community colleges and universities.Wann ist Laborarbeit wirklich sinnvoll? Dieser Leitfaden für den Labortisch ermutigt seine Leser, Experimente nicht einfach "nach Vorschrift" abzuarbeiten, sondern über ihren Sinn und über die Relevanz der Resultate nachzudenken. Mit der Zeit wird so die Fähigkeit entwickelt, Fragestellungen zu konkretisieren und geeignete Experimente abzuleiten. Jeder der hier vorgestellten Versuche beginnt mit einem Szenario und endet mit Fragen, die zum Überdenken des Themas anregen.

Unit 1 Scientific Method

Experiment 1-1 How Long Can a Bubble Last? 1

Experiment 1-2 Are All Pennies the Same? 19

Unit 2 Stoichiometry

Experiment 2-1 How Much Hydrogen? 39

Experiment 2-2 How Much is Too Much? 55

Unit 3 Solutions, Atomic Structure, and Periodicity

Experiment 3-1 What Makes a Solution Colored or Colorless? 67

Experiment 3-2 Are There Property Patterns? 87

Experiment 3-3 What Factors Affect Color Intensity? 107

Unit 4 Reactivity and Periodicity

Experiment 4-1 What Factors Affect the Solubility of Ions? 121

Experiment 4-2 Can Toxic Ions Be Removed from Water by Precipitation? 143

Unit 5 Gases

Experiment 5-1 How Do Gas Volumes Change as We Ascend and Descend? 163

Unit 6 Thermochemistry

Experiment 6-1 Which Salts Make Good Cold Packs and Hot Packs? 183

Experiment 6-2 How is Heat Measured Indirectly? 201

Unit 7 Structure and Property Relationsips

Experiment 7-1 Do Like Repel or Attract? 225

Unit 8 Equilibrium

Experiment 8-1 How Can a Chemical Equilibrium Be Shifted? 241

Experiment 8-2 How Do Soaps Compare in Controlling Malodor? 261

Unit 9 Acids and Bases

Experiment 9-1 Is It Acidic, Basic, or Neutral? 281

Experiment 9-2 Are Acid-Base Properties in Consumer Products Predictable? 299

Unit 10 Oxidation and Reduction

Experiment 10-1 Do Chemicals Duplicate the Effects of a Battery? 317

Experiment 10-2 Which Metal is Appropriate for Food and Beverage Storage? 337

Unit 11 Electrochemistry

Experiment 11-1 Which Metals Provide the Best Voltage? 353

Experiment 11-2 Why Did My Watch Stop Suddenly? 367

Experiment 11-3 Why is a ‘‘Harley’’ Chrome-Plated? 387

Unit 12 Kinetics

Experiment 12-1 How Long Will It Take? 401

Nancy Kerner is a lecturer and Smithsonian Fellow at the University of Michigan.?She has long been involved in Guided Inquiry learning and is a co-founder of MERLOT (Multimedia Educational Resource for Learning and Online Teaching), an NSF-funded cross-disciplinary website that shares and disseminates different types of teaching materials.

Ram Lamba is a professor at the University of Puerto Rico at Cayey, and he won the American Chemical Society's Presidential Award for Excellence in Science, Mathematics, and Engineering Mentoring in 1999.?Ram is also involved in the Process Oriented Guided Inquiry Learning project, alongside Jim Spencer, Lyman Rickard, and Rick Moog.?He translated Moog's Guided Inquiry workbook into Spanish.