Experimentos de Micro Ciencia: Química Orgánica (inglés solamente)

The Microchemistry Kits and Workbooks are designed by the UNESCO-Associated Centre for Microscience Experiments, at the RADMASTE Centre of the Faculty of Science, University of the Witwatersrand, Johannesburg, in the in cooperation with International Union for Pure and Applied Chemistry (IUPAC) and UNESCO. They are developed and promoted by UNESCO through its important networks and relations with non-governmental and intergovernmental organizations world-wide. 

These Chemistry Kits and Workbooks were brought to the attention of educators in more than 85 countries. This, in turn, has led to wide implementation in many countries and motivation to extend the work to other areas of science. In addition to the original chapters on Chemistry first published in 2002, the Organic Chemistry Microscience Experiments are part of new materials added in 2006.

New:

Teaching and Learning Materials: Microscience Experiments, Organic Chemistry–Manual for Learners

Table of Contents

Foreword …. 6

Introduction …. 7

Components of the RADMASTE Organic Microchemistry Kit …. 8

Chapter 1 - Qualitative Testing of Organic Compounds …. 9

1. Preparing Esters …. 11

2. Tests for Aldehydes and Ketones …. 14

3. The Iodoform Reaction …. 22

4. Tests for Identifying and Classifying Alcohols …. 26

5. Tests for Unsaturated Hydrocarbon Compounds …. 34

6. Investigating Intermolecular Forces in Organic Compounds

by Measuring the Boiling Point ….  39

7. Melting Point Determinations …. 40

Chapter 2 - General Procedures …. 41

1. Assembling the Wire Microvial-holder ….  43

2. Vacuum Filtration and Washing of the Collected Solid …. 44

3. Making Capillary tubes for Melting and Boiling Point

Determinations …. 46

4. General Procedure for Boiling Point Determinations …. 46

5. General Procedure for a Melting Point Determination …. 48

6. Making TLC Spotting Capillary Tubes …. 50

7. General Procedure for a Thin Layer Chromatogram (TLC) ….  51

Chapter 3 - Preparation and Reaction of Organic Compounds …. 53

1. Preparation and Testing of Ethyne (Acetylene) …. 55

2. Making Esters . the Synthesis of Aspirin …. 57

3. Recrystallisation and Purification of Aspirin …. 59

4. The Oxyacetylene Flame ….. 61

5. Acid-base Extraction of Benzoic Acid from Naphthalene …. 63

6. Using Esters: Saponification …. 66

Teaching and Learning Materials: Microscience Experiments, Organic Chemistry–Manual for Teachers

Table of Contents

UNESCO Coordination:

Julia Hasler, Programme Specialist, SC/BES j.hasler@unesco.org
Maria Liouliou, Project Coordinator, SC/BES, m.liouliou@unesco.org

Technical Partner:

Beverly Bell, Executive Director, International Foundation for Science Education (IFSE), UNESCO-Associated Centre for Microscience Experiments,The RADMASTE Centre, University of the Witwatersrand, Johannesburg, South Africa, beverly.bell@wits.ac.za