Contextualization

Theoretical Introduction

Nuclear Reaction is a reaction that occurs in the nucleus of an atom. Unlike chemical reactions, which involve the redistribution of electrons in the outermost layer of atoms, a nuclear reaction involves a change in the nucleus of an atom. This usually involves a change in the number of protons or neutrons in the nucleus, and often involves the release of vast amounts of energy.

There are mainly two types of these reactions: Nuclear Fission and Nuclear Fusion. Nuclear fission is the splitting of a heavy atomic nucleus into two or more smaller nuclei, along with some byproducts. The most well-known example of fission is uranium-235, which can undergo fission when hit by a neutron.

On the other hand, nuclear fusion is the joining of two light nuclei to form a heavier nucleus. Fusion is the reaction that powers the Sun and stars, where the fusion of hydrogen produces helium.

Real-World Applications

Nuclear reactions have a variety of applications, from medicine to the production of electrical energy. In medicine, for example, radiation therapy uses radiation to kill cancer cells. In energy production, nuclear power plants use controlled nuclear fission to generate heat, which is then used to produce electricity.

Furthermore, nuclear reactions also play an important role in our understanding of the universe. Nuclear fusion, for instance, is what powers the Sun and stars, emitting the light and heat that allows life to exist on Earth.

Activity

Activity Title: "Nuclear Reaction in Action: from Hiroshima to the Sun"

Project Objective

This project aims to understand the differences, similarities, and implications of nuclear reactions - fission and fusion - both in a laboratory context and in everyday and historical contexts. Additionally, it seeks to develop research, critical analysis, and communication skills throughout the project.

Detailed Project Description

Students will be divided into groups of 3 to 5 members, and each group will be responsible for studying a particular aspect of nuclear reactions. There are three main topics that will be the focus of study: 1. Nuclear Fission and the Hiroshima bomb; 2. Nuclear Fusion in the Sun; 3. Nuclear Fission in a nuclear power plant reactor.

The groups should conduct extensive research on their topics, focusing on understanding the chemical, physical, and historical aspects involved. Additionally, they should analyze the implications for society and the environment. The groups should seek to interview (via email or video call) experts in the field such as university professors, nuclear engineers, among others.

Each group should create a multimedia presentation (it can be a video, slide presentation with audio, or similar) detailing their findings. The presentation should be creative and engaging, capable of explaining the topic in a simple and enjoyable way for an audience with little knowledge of chemistry.

Required Materials

• Internet access for research
• Computer or mobile devices for creating the multimedia presentation
• Optional: video editing or slide presentation software

Detailed Step-by-Step for Activity Execution:

1. Theoretical research: each group should conduct in-depth research on the concept, history, and applications of the nuclear reaction in their assigned context. Notes and references should be taken carefully.

2. Interview: if possible, students should reach out and interview experts in the field for a richer and deeper understanding of the topic. The interview questions should be prepared in advance and should address both the technical aspects and practical implications of the topic.

3. Presentation creation: based on the information obtained, students should create a multimedia presentation that clearly and engagingly explains the research topic. This presentation should be accessible, interesting, and informative.

4. Review and editing: before finalizing the presentation, students should carefully review and edit to ensure that all information is correct, clear, and well-presented.

5. Project submission: the final presentation and written report should be submitted for evaluation according to the established criteria.

Project Deliverables

Each group must deliver:

1. Multimedia Presentation: A well-structured, engaging, and informative multimedia presentation that explains the assigned topic.

2. Project Report: A written report detailing the research conducted, the processes used to create the presentation, and the conclusions and practical applications of the topic. This report should follow the structure of Introduction, Development, Conclusion, and Bibliography:

   • Introduction: The group should contextualize the theme and its objectives, emphasizing its relevance and real-world application.

   • Development: Here, the group should detail the theory behind the project topic and describe the process of creating the presentation, as well as the results of the research and interviews. The methodology used should be highlighted and justified.

   • Conclusions: The group should synthesize the main points of the project and reflect on what they have learned, the difficulties encountered, and the solutions found. The implications of the nuclear reaction in their specific context should be highlighted.

   • Bibliography: All books, articles, websites, and videos used in the research should be listed here, following reference standards.

The total duration of the project should be approximately one month, and each student should contribute around 5-10 hours of work.