Lesson plan of Organic Functions: Nomenclature of Nitrile and Isonitrile

Objectives (5 - 7 minutes)

1. Understand the concept of nitriles and isonitriles: The teacher must ensure that students understand what nitriles and isonitriles are, their properties, and fundamental differences. This can be done by means of a brief review of the basic concepts of organic functions and molecular structures.

2. Learn the IUPAC nomenclature for nitriles and isonitriles: The main focus of this class is to teach students how to name nitriles and isonitriles correctly, according to the rules established by the IUPAC (the International Union of Pure and Applied Chemistry). Students must be able to identify the prefix, the infix, and the suffix in the nomenclature.

3. Practice the nomenclature of nitriles and isonitriles: Through practical exercises, students must have the opportunity to apply what they have learned and to practice the nomenclature of nitriles and isonitriles. The teacher must provide a variety of examples and guide students during the practice.

Secondary Objectives

• Promote understanding about the importance of nomenclature in Chemistry: Besides learning the specific nomenclature of nitriles and isonitriles, students should understand the importance of nomenclature in Chemistry as a whole. This may be stressed during the class discussion and while relating the concept to practical applications.

• Stimulate problem solving and critical thinking: Through the practice of nomenclature, students will be exercising problem-solving and critical thinking skills. The teacher should encourage students to think independently and find solutions for the problems presented.

Introduction (8 - 10 minutes)

1. Review of Previous Concepts: The teacher should start the class reviewing the basic concepts of organic functions and nomenclature in Chemistry. This may include a recap of the main functional groups, their properties, and how they are named. Additionally, the teacher must review the structure of molecules, emphasizing the importance of understanding structure in order to correctly name nitriles and isonitriles.

2. Problem situations: Following the review of basic concepts, the teacher will pose two problem situations to spark students' interest:

   • Situation 1: The teacher presents a complex molecular structure and asks students how they would name it, leading them to realize the need for a standardized nomenclature system.

   • Situation 2: The teacher describes a hypothetical situation in which a chemist needs to identify an unknown compound in a sample. The teacher highlights how correct nomenclature can help accurately and rapidly identify the compound.

3. Contextualization: The teacher should then explain the importance of nitriles and isonitriles in industry and scientific research, briefly mentioning examples of their real-life applications. This may include the use of nitriles in medicines and pharmaceutical products, and in plastics and rubbers.

4. Introduction to the Topic: In order to engage students' attention, the teacher may share interesting trivia or applications related to nitriles and isonitriles:

   • Curiosity 1: The teacher may mention that nitriles are used in the production of synthetic fibers, like acrylic, which are used in clothing and blankets.

   • Curiosity 2: The teacher may talk about the use of isonitriles in the synthesis of pharmaceutical compounds, such as Edman's isonitrile, which is used to sequence proteins.

5. Class Objectives: Finally, the teacher should present the class Objectives, explaining that students will learn how to identify and correctly name nitriles and isonitriles, according to IUPAC rules.

Development (20 - 25 minutes)

1. Theory: Concept and Properties of Nitriles and Isonitriles (8 - 10 minutes)

1. Definition of Nitriles and Isonitriles: The teacher should explain that nitriles are organic compounds that contain the cyano group (-C≡N) bonded to a carbon atom, while isonitriles contain the isocyano group (-N≡C) bonded to a carbon atom. The teacher must highlight the differences in the structure of these two functional groups.

2. Physical and Chemical Properties: The teacher should discuss the physical and chemical properties nitriles and isonitriles. This may include melting and boiling points, solubility in different solvents, reactivity with other compounds, among others.

3. Applications and Importance: The teacher should highlight the practical applications of nitriles and isonitriles in industry and research. This may include the use of nitriles in the production of plastics, rubbers and synthetic fibers, and the use of isonitriles in the synthesis of pharmaceutical compounds and in tagging reactions.

2. Theory: Nomenclature of Nitriles and Isonitriles (8 - 10 minutes)

1. IUPAC Nomenclature Rules: The teacher should explain the IUPAC nomenclature rules for nitriles and isonitriles. This may include the identification of the functional group, numbering of carbon atoms, choosing the prefix, infix and suffix, among others.

2. Nomenclature Examples: The teacher should provide several examples of nitriles and isonitriles and walk students through the process of naming each one, step by step. Students should be given the opportunity to ask questions and to clarify any doubts they may have.

3. Practice Exercises: The teacher should then propose a few nomenclature exercises for students to practice. The exercises should vary in difficulty and complexity, allowing students to apply what they learned in different scenarios.

3. Discussion and Clarification of Doubts (5 - 7 minutes)

1. Review of Concepts: The teacher should briefly review the main concepts covered in class, reinforcing the importance of nomenclature in Chemistry.

2. Clarification of Doubts: The teacher should open the floor for questions and clarify any doubts students may have. This may include questions related to theory, the nomenclature examples and the proposed exercises.

3. Student Feedback: The teacher should ask for student feedback about the class, asking what they found most useful, what they found most challenging and any suggestions they might have to improve future classes on the topic.

This lesson plan allows students to acquire a sound knowledge of nitrile and isonitrile nomenclature, as well as an understanding of the concept of these organic functions. Through the combination of theory, examples, and practice exercises, students will have the opportunity to apply and refine their nomenclature skills while developing a deeper understanding of these important organic functions.

Feedback (7 - 10 minutes)

1. Review of Content: The teacher should start the Feedback stage by briefly reviewing the main points covered during class. This includes the definition of nitriles and isonitriles, their physical and chemical properties, and IUPAC nomenclature rules. The teacher may do this by asking students to summarize these concepts in their own words, or by asking them to share what they believe were the most important aspects of each topic.

2. Theory-Practice Connection: Next, the teacher should help students connect the theory presented to the practice of exercises. This can be done by highlighting how each nomenclature rule was applied in the examples and exercises. The teacher may also ask students to explain how they used the theory to solve the practical problems.

3. Reflection on Learning: The teacher should then prompt students to reflect on what they have learned. This can be done through questions such as:

   1. "What was the most important concept that you learned today?"
   2. "What questions do you still have?"
   3. "How can you apply what you learned today in real-life situations or other areas of knowledge?"

   Students should be given a minute to think about their answers before sharing them with the class. The teacher should encourage all students to participate and respect different perspectives.

4. Feedback and Assessment: Finally, the teacher should ask for student feedback about the class. This could include questions about the pace of the class, the clarity of the explanations, the difficulty of the exercises, and so on. The teacher should also assess students' performance on the nomenclature exercises and consider whether the Learning Objectives were met. Student feedback and teacher assessment should be used to inform the planning of future lessons and to adjust teaching strategies as needed.

5. Class Closure: The teacher should close the class by summarizing the key points discussed and reinforcing the importance of proper nomenclature in Chemistry. The teacher should also inform the students about the topic of the next class and any required readings or preparations.

This Feedback stage is essential for consolidating students' learning, helping them make meaningful connections between theory and practice, and for assessing the effectiveness of the lesson. Furthermore, by asking for student feedback, the teacher demonstrates that their voices are valued and that the teacher is willing to make adjustments to better meet their learning needs.

Conclusion (5 - 7 minutes)

1. Content Summary: The teacher should begin the class Conclusion with a brief summary of the key points covered. They should recap the definition of nitriles and isonitriles, their properties, their applications, and most importantly the IUPAC nomenclature rules for naming them. This will help reinforce what has been learned and cement the students' understanding of the topic.

2. Connection Between Theory, Practice, and Applications: The teacher should then highlight how the lesson connected theory, practice, and applications. They can recall the practical nomenclature examples that were used to illustrate IUPAC rules, and how these naming skills are used in industry and research. This will help students understand the relevance of what they have learned and see how they can apply their knowledge outside the classroom.

3. Supplemental Materials: The teacher should suggest additional study materials for those students who wish to explore the topic of nitriles and isonitriles and their nomenclature in more depth. This could include textbooks, chemistry websites, educational videos, and language learning apps that have sections dedicated to practicing chemical nomenclature. The teacher can share these resources with the students via the school's online learning platform or via email.

4. Relevance of the Topic: Finally the teacher should emphasize the importance of correct nomenclature in Chemistry. They can explain how standardized nomenclature helps chemists communicate clearly and effectively about the compounds that they are studying or producing. Additionally, they can mention how the ability to correctly name chemical compounds can be useful in various careers, including medicine, pharmacy, material engineering, and many more.

The Conclusion of the lesson is a chance for the teacher to reinforce key concepts and help students make meaningful connections between what they have learned and the real world. By suggesting additional study materials, the teacher is also encouraging students to take ownership of their own learning and to explore the topic in more depth if they desire.