Contextualization

Theoretical Introduction

Oxides are chemical compounds that have at least one oxygen atom and one or more atoms of another element. The formation of oxides is a very common process, especially in nature. When a metal or non-metal reacts with oxygen, it results in the formation of oxides.

Oxides can be classified into three main categories: basic oxides, acidic oxides, and amphoteric oxides. Basic oxides are formed by metals and react with water to form bases or with acids to form salt and water. Acidic oxides are formed by non-metals and react with water to form acids or with bases to form salt and water. Amphoteric oxides, on the other hand, can react with both acids and bases and are formed by certain metals, such as aluminum and zinc.

Contextualization of the theme and its importance

Oxides are present in various parts of our daily life. For example, when an apple is cut and left in contact with the air, it darkens due to the formation of oxides. Similarly, when iron is exposed to moisture and air, it rusts, which is another example of oxide formation.

In a broader context, oxides also have significant industrial applications. Silicon dioxide (SiO2), for example, is widely used in the construction industry, while aluminum oxide (Al2O3) is used in aluminum production. Understanding these processes is essential for various industries, including construction, metallurgy, and chemistry.

Practical Activity

Activity Title: Investigating Oxides

Activity Objective

This project aims to allow students to explore the world of oxides in a practical way, investigating their properties, classifications, and everyday or industrial uses.

Project Description

Students should form groups of three to five members and choose two or three oxides to study. The idea is for each group to investigate the properties of the selected oxides, how they are formed, and their everyday or industrial applications.

Required Materials

• Internet access for research.
• Educational materials such as books or videos.
• Laboratory equipment and materials if experiments are decided (under proper supervision).
• Paper sheets and pens for notes.

Project Step-by-Step

1. Form groups of 3 to 5 students.

2. Each group should choose two or three oxides to study.

3. Research in-depth about these oxides, including their properties, classifications, formation methods, and uses.

4. If possible, and under proper supervision, conduct experiments in the laboratory to study the properties of the chosen oxides.

5. Prepare a presentation of your findings for the class.

6. Write a detailed report of your findings and learnings.

Project Deliverables

Students must deliver:

1. An oral presentation about their findings.
2. A written report of their findings and learnings.

The report should be well-structured and contain the following topics:

1. Introduction: Provide context for the studied oxides and explain why they are important. Explain the objective of this project.

2. Development: Explain the theory behind oxides, their properties, and classifications. Describe in detail the activities carried out, the methodology used, and present and discuss your results.

3. Conclusion: Summarize your main points, explain what you have learned, and draw conclusions about the project.

4. Bibliography: Indicate the sources you relied on to work on the project, such as books, web pages, videos, etc.

The report should be written in a clear, concise, and objective manner. It should be a thoughtful reflection on what was learned about oxides and how the project was carried out and managed. It should be a reflection of the group's effort and meaningful learning.

Thus, the practical activity will not only allow students to understand oxides and their properties but also help them enhance various socio-emotional skills, such as time management, communication, problem-solving, creative thinking, and proactivity.