Contextualization

Chemistry, although sometimes abstract and distant from our daily lives, is deeply embedded in our day-to-day activities. In a simple act of breathing, chemical reactions occur so that we can convert oxygen into energy. In this scenario, matter is made up of fundamental units called atoms. However, the modern notion we have about atomic structure was built over centuries, through many discoveries and theories.

In this project, we will explore the evolution of atomic models. From the first philosophical ideas about atoms in Antiquity, through Dalton's model in the early 19th century, to the more complex and complete models of Thomson, Rutherford, and Bohr. All these scientists have contributed greatly to our current understanding of the atom and the universe around us.

But why is it so important to study atomic models? Understanding the structure and behavior of the atom is the basis of Chemistry and, more broadly, of all Modern Science. Medicine, technology, energy - all these fields are directly impacted by our knowledge of the atom. Therefore, understanding how we arrived at this knowledge is not just a history lesson, it is also realizing the advancement of science and the importance of critical and investigative thinking.

Here are some excellent resources to start your study:

• Book "Chemistry: The Central Science" by Theodore L. Brown, H. Eugene LeMay Jr., Bruce E. Bursten, Catherine Murphy, and Patrick Woodward. This book provides a great introduction to chemistry and its fundamental concepts.

• Khan Academy videos on the evolution of atomic models. These videos give an overview of each atomic model. (Link: https://www.khanacademy.org/science/chemistry/atomic-structure-and-properties)

• Article "Atomic Models: Evolution and Theories" from the Mundo Educação website. This article summarizes the main atomic models and their contributions. (Link: https://mundoeducacao.uol.com.br/quimica/modelos-atomicos.htm)

Practical Activity: Little Theater of Atomic Models

Project Objective

The task is to create a short theater piece, explaining the evolution of atomic models. The idea is to make learning more fun and engaging, as well as allowing students to explore their creativity.

Detailed Project Description

Each group should write a script for the "Little Theater of Atomic Models", incorporating the main scientists and their models. Think of creative ways to represent atoms and their parts, using everyday items. Each scientist should present their atomic model and explain why it is better than the previous one, highlighting its contributions and limitations. In the end, the "scientists" discuss together the most current and complete model.

Necessary Materials

The materials used may vary according to the group's creativity, but could include:

• Costumes and/or accessories for characterizing the scientists.
• Various objects to represent atoms and their parts.
• Paper and colored pens to make posters and help explain the atomic models.

Step by Step

1. Research the main atomic models: Dalton, Thomson, Rutherford, and Bohr.
2. Write a script for the play. Remember that the play should be educational, but also fun. Try to incorporate humor and creativity into your presentation.
3. Assign roles to each team member. Everyone should have at least one active role in the presentation.
4. Plan your props and scenery. How will you represent the atoms and their parts?
5. Practice the play and make adjustments to the script as necessary.
6. Perform the play in front of the class and record it on video (can be recorded with a smartphone).
7. After the presentation, each group should prepare a written report.

Project Deliverables

I. Written Report

The report should follow the following format:

1. Introduction: Here students should present the project's objective and a brief summary of the atomic models studied, highlighting the importance of studying the evolution of atomic models for Chemistry and Science in general.

2. Development: Here the methodology used to carry out the project should be detailed, that is, the conception and realization of the play. In addition, each atomic model presented in the play should be described in detail, presenting its contributions and limitations.

3. Conclusion: This is the space to discuss the lessons learned during the project and what can be concluded from the atomic models presented.

4. Bibliography: Here students should indicate all sources consulted for the project.

II. Presentation Video

The presentation video will be a way to assess students' understanding of atomic models and also to evaluate creativity, collaboration, and communication among group members.

This project is intended for groups of 3 to 5 students, and each student should dedicate two to four hours to the project. The deadline is one week from the date of project assignment.

This project will not only test your knowledge of the evolution of atomic models, but will also help develop important skills such as teamwork, communication skills, time management, and creativity.