Objectives (5 - 7 minutes)

1. Understand the structure of aromatic hydrocarbons and how it influences the nomenclature of these compounds.

2. Learn the nomenclature of aromatic hydrocarbons, with emphasis on benzene and its derivatives.

3. Apply the acquired knowledge in solving practical exercises of aromatic hydrocarbon nomenclature.

Secondary Objectives

1. Develop the ability to identify the structure of an aromatic hydrocarbon from its name.

2. Stimulate critical thinking and problem-solving through the application of aromatic hydrocarbon nomenclature in practical situations.

3. Promote interaction and discussion in the classroom, encouraging students to share their doubts and solutions during the learning process.

Introduction (10 - 15 minutes)

1. Review of Previous Content: The teacher should start the class by reviewing the basic concepts of hydrocarbons and their nomenclature, as this knowledge is fundamental for understanding the current topic. Additionally, the concept of organic function should be reviewed, highlighting that aromatic hydrocarbons are one of them. (3 - 5 minutes)

2. Problem Situations:

   • The teacher can present the structural formula of an aromatic compound to the students and ask: 'How can we name this compound?' (2 - 3 minutes)
   • Next, the teacher can present the name of an aromatic compound and ask: 'What is the structural formula of this compound?' (2 - 3 minutes)
   • Finally, the teacher can propose the following situation: 'Imagine you are chemists and need to name a series of aromatic compounds. How would you do it?' These problem situations serve to arouse students' interest and prepare them for the content to be covered. (2 - 3 minutes)

3. Contextualization: The teacher should explain the importance of aromatic hydrocarbons, emphasizing that they are widely used in the chemical and pharmaceutical industries. For example, benzene, one of the simplest aromatic hydrocarbons, is a key component in many products, including plastics, rubbers, dyes, and medicines. Additionally, the teacher can mention that the correct nomenclature of these compounds is essential for effective communication in the field of chemistry. (2 - 4 minutes)

4. Curiosities and Stories: To arouse students' interest, the teacher can share some curiosities and stories related to aromatic hydrocarbons. For example, they can mention that the term 'aromatic' was originally used to describe the pleasant smell of some of these compounds, although we now know that not all aromatic compounds have a characteristic odor. Additionally, the teacher can tell the story of the discovery of benzene, a milestone in the history of organic chemistry. (2 - 3 minutes)

Development (20 - 25 minutes)

1. Theory - Nomenclature of Aromatic Hydrocarbons (10 - 12 minutes)

   • The teacher should explain that the nomenclature of aromatic hydrocarbons follows specific rules.
   • They should start by explaining the nomenclature of benzene, the base compound of aromatic hydrocarbons. The teacher should demonstrate how the structure of benzene is represented and how it is named.
   • Next, they should present the derivatives of benzene, such as toluene, coumarin, and benzoic acid. For each derivative, the teacher should show how the structure is modified from benzene and how this affects the nomenclature.
   • The teacher should emphasize the importance of knowing the nomenclature rules to effectively communicate the compound's structure.

2. Practical Activity - Nomenclature of Aromatic Hydrocarbons (10 - 12 minutes)

   • After the theoretical explanation, the teacher should propose a practical activity. Students should receive a series of aromatic hydrocarbon structures and should name each of them.
   • The teacher should move around the classroom, assisting students as needed and answering any questions.
   • This activity allows students to apply the acquired knowledge and develop their naming skills.

3. Group Discussion - Applications of Nomenclature (5 - 8 minutes)

   • After the practical activity, the teacher should propose a group discussion. Students should discuss possible applications of what they have learned.
   • The teacher can ask questions like: 'How can the correct nomenclature of aromatic hydrocarbons be useful in the chemical industry?' or 'How can the correct nomenclature of aromatic hydrocarbons help avoid errors in a laboratory?'
   • This discussion allows students to reflect on the importance of what they have learned and how they can apply this knowledge in real-life situations.

Return (8 - 10 minutes)

1. Discussion and Reflection (3 - 4 minutes):

   • The teacher should promote a classroom discussion, asking students to share their answers or solutions to the practical activities carried out. This can be done in small groups or in a whole-class discussion, depending on the teacher's preference.
   • During this discussion, the teacher should encourage students to explain the reasoning behind their answers and justify their naming choices. This allows students to see different approaches to naming and learn from their peers.
   • Additionally, the teacher can ask guiding questions to steer the discussion, such as: 'Why did you choose this name for the compound?' or 'What makes the nomenclature of aromatic hydrocarbons different from the nomenclature of other organic compounds?'

2. Connection with Theory (2 - 3 minutes):

   • The teacher should then connect the practical activities carried out with the theory presented. For example, the teacher can highlight how the compound's structure affects the nomenclature, or how correct nomenclature can help effectively communicate the compound's structure.
   • The teacher should reinforce the key concepts of aromatic hydrocarbon nomenclature and how they were applied during the practical activities. This helps students consolidate their understanding of the topic and realize the relevance of theory to practice.

3. Individual Reflection (2 - 3 minutes):

   • Finally, the teacher should suggest that students reflect individually on what they have learned. The teacher can ask questions like: 'What was the most important concept you learned today?' or 'What questions have not been answered yet?'
   • The teacher should give students a minute to think and then ask for some volunteers to share their answers. This allows the teacher to assess students' understanding and identify any areas that may need reinforcement in future classes.
   • Additionally, the teacher can collect students' responses in writing, if desired, to get a more accurate idea of how students are progressing in their understanding of aromatic hydrocarbon nomenclature.

Conclusion (5 - 7 minutes)

1. Summary of Contents (2 - 3 minutes):

   • The teacher should start the Conclusion by summarizing the main points covered in the class. This includes the structure of aromatic hydrocarbons, the specific nomenclature of these compounds, and how the structure affects the nomenclature.
   • The teacher should reinforce the importance of correct nomenclature in effective communication in chemistry, and how the ability to name and identify the structure of aromatic hydrocarbons is fundamental to understanding many chemical processes.

2. Connection between Theory and Practice (1 - 2 minutes):

   • The teacher should emphasize how the class connected the theory of aromatic hydrocarbon nomenclature with practice. This can include a discussion on how students applied theoretical knowledge to name the compounds in the practical activity.
   • The teacher should highlight that the ability to apply the correct nomenclature of aromatic hydrocarbons is a valuable practical skill that students can apply in their future careers, whether in the chemical industry, research, or medicine.

3. Additional Materials (1 - 2 minutes):

   • The teacher should suggest additional materials for students who wish to deepen their understanding of aromatic hydrocarbon nomenclature. This may include chemistry books, online chemistry websites, or educational videos.
   • The teacher can also provide additional nomenclature exercises for students to practice at home. These exercises can include both naming compounds from structure and identifying the structure from the name.

4. Subject Relevance (1 minute):

   • To conclude the class, the teacher should reinforce the importance of the subject presented. The teacher can highlight how the nomenclature of aromatic hydrocarbons is used in various areas, from the chemical industry to medicine.
   • Additionally, the teacher can emphasize that the ability to name and identify the structure of aromatic hydrocarbons is a core competency in chemistry, and that students will use it in many other areas of study.
   • The teacher can also point out that the knowledge gained in today's class will be fundamental for understanding future topics, such as the reactions of aromatic hydrocarbons.

With this, students should have a solid understanding of the nomenclature of aromatic hydrocarbons and its practical importance.