Contextualization

Theoretical Introduction

Ethers are a category of organic compounds that have oxygen as the central atom linked to two organic radicals, which can be the same or different, through a single covalent bond. This structure gives them a series of chemical and physical properties that make them valuable in various industrial and scientific applications.

The nomenclature of ethers is based on the names of the radicals to which oxygen is attached, with 'oxy' being inserted between these radicals. For example, the ether formed by the linkage of oxygen with two methyl radicals is called methoxymethane. In addition, ethers have low chemical reactivity, making them ideal solvents for organic reactions.

The production of ethers usually occurs through the reaction of alcohols in an acidic medium, known as ether synthesis reaction or Williamson reaction. However, it is worth noting that the use and handling of ethers require caution due to their high volatility and flammability.

Contextualization

Ethers are inserted in a variety of practical contexts in our daily lives. Industrially, ethers are used as solvents for chemical reactions, and can be found in laboratories and production processes. They are also applied in the production of plastics and rubbers, as well as being ingredients in cleaning products. In the domestic environment, ethers can be found in common items such as brake fluids and cold start fluids.

It is interesting to note that in the past, ethers played an important role in healthcare as inhalation anesthetics. Although their current use has decreased considerably due to the development of less volatile and safer substances, ethers are still used for this purpose in some regions and situations.

Reliable Resources:

• Book: Organic Chemistry - John McMurry
• Website: Chemguide - Ethers Click here to access
• Videos: Khan Academy - Videos about ethers Click here to access
• Website: Mundo Educação - Ethers Click here to access

Practical Activity

Activity Title: Ether, much more than a solvent.

Project Objective:

This activity aims to cultivate students' deep understanding of the structure, properties, nomenclature, production, applications, and safety around ethers. The project also seeks to develop research, teamwork, and communication skills. The activity will be interdisciplinary, involving concepts of organic chemistry and physics (thermodynamics).

Detailed Project Description:

The work will be carried out by groups of 3-5 students and should be developed over 2 weeks. Each group will be responsible for exploring a different type of ether, providing a comprehensive and varied view of different ethers and their applications.

Phase 1: Research and Planning

Students should start the activity with in-depth research on the type of ether allocated to their group. This research should explore the ether's structure, concept, production method, industrial use, and safety considerations. Students should identify at least two real practical applications of the ether and prepare a presentation on the topic.

Phase 2: Experimental Simulation

In this stage, students will experimentally simulate the production of the ether in a virtual environment using laboratory simulation tools available on the internet. At this point, it is important to revisit the concepts of thermodynamics and chemical reactions.

Phase 3: Presentation Assembly and Report Writing

Finally, students will prepare a presentation of their work, which should be presented to the class and the teacher. They will also write a report detailing the entire research and simulation process, as well as the results obtained and conclusions reached.

Required Materials:

For the completion of this project, the following materials will be necessary:

• Books and online resources for ether research
• Computer with internet access for virtual laboratory simulation and presentation preparation
• Presentation application such as Microsoft PowerPoint or Google Slides

Detailed Step-by-Step Guide for Activity Execution:

Step 1:

Students should conduct in-depth research on the ether assigned to their group, exploring its structure, concept, production method, industrial use, and safety considerations. It is important to document all research sources.

Step 2:

Students should identify at least two practical applications of their ether and document them. They will need to explain how the ether is used in each application, what its function is, and why it is used.

Step 3:

Students will simulate the production of the ether in a virtual laboratory simulation. They will need to document the methodology, reaction conditions, and results obtained.

Step 4:

Based on the research and simulation results, students will prepare a detailed presentation on their ether, including all research topics, simulation results, and explanation of practical applications.

Step 5:

Finally, students will write a report detailing the research and simulation process, the results, and the conclusions. The report should follow the structure: Introduction, Development (Theory, Activity and Methodology, Results), Conclusion, and Bibliography. It is important for the report to be aligned with the presentation in order to complement and deepen the understanding of the studied ether.

Project Deliverables:

Students must submit the research and simulation presentation, the detailed report, and the list of references used for research. They must also be prepared to present and discuss their work with the class and the teacher.