Contextualization and Introduction to the Project

Chemistry is a fascinating discipline that gives us the possibility to understand how the world around us works on a very small scale. A fundamental part of this discipline involves the quantitative analysis of substances. Therefore, understanding how to calculate the minimum formula of an organic compound can open doors to countless possibilities in the field of chemistry. The minimum and molecular formulas are like the identity of a chemical compound, and understanding how to calculate them is a crucial step to becoming a successful professional in the field of chemistry.

The minimum formula, also known as the empirical formula, of a chemical compound shows us the simplest relationship between the atoms involved. It is the leanest expression of the composition of a compound, showing the proportion of the elements in their most reduced form. The molecular formula goes further and gives us the exact number of atoms of each element in a single molecule of the substance.

These concepts are not restricted to classrooms. The minimum and molecular formulas are used in several fields and situations in real life. For example, in the pharmaceutical industry, where chemical compounds are used to create medicines, knowing the minimum and molecular formulas is essential to ensure that the medicine produced is effective and safe.

In addition, in food industries, it is important to know the amounts of chemical elements present to ensure product safety and meet nutritional requirements. The minimum and molecular formulas are also crucial in scientific research, allowing researchers to precisely identify and quantify the chemical compounds present in their experiments and studies.

To delve deeper into the subject, we recommend the following resources:

1. How to Determine the Empirical Formula
2. Calculation of Chemical Formulas
3. E-Book: Chemistry _ The Central Science_ (in Portuguese)

These resources are an excellent starting point to understand the basics of calculating the minimum and molecular formulas and to delve deeper into these concepts.

Practical Activity _ "Chemistry in Action" Card Game_

Project Objective

This practical project aims to deepen knowledge about calculating the minimum formula and molecular formula of organic compounds. In addition, it aims to stimulate teamwork, time management and problem-solving skills.

Detailed Description of the Project

Students should divide into groups of 3 to 5 and create a card game based on the theme "minimum formula and molecular formula", where the goal is to formulate chemical compounds from element cards. Each card will have information such as the atomic mass of the element and its symbol.

Materials Required

• Card stock or similar for creating the cards.
• Colored pens/Printing system for making the cards.
• Research data on chemical elements.

Detailed Step-by-Step to Complete the Activity

1. Research: Start the project with a research phase. Group members should study the minimum formula, molecular formula, and how to calculate them. Emphasize the importance of understanding these concepts to apply them to the game.

2. Game Planning: The next step is to plan the card game. What would the gameplay be like? What would be the ultimate goal of the game? How can the minimum and molecular formulas be incorporated?

3. Creating the Cards: After defining the rules of the game, start creating the cards. Each card should represent a chemical element and contain relevant information about it, such as atomic mass and atomic number.

4. Execution and Testing: After creating the game, it's time to try it out! All group members should play several times to make sure the game works as expected.

5. Adjustments: Based on the tests, make the necessary adjustments to the game. You may need to change some aspect of the rules or the design of the cards.

6. Final Presentation: Finally, each group will present their game to the class, explaining the rules, the objective, and how they incorporated the concepts of minimum formula and molecular formula into the game.

Project Deliverables

After completing the practical part of the project, students must write a report following the described structure. The report should contain:

1. Introduction: Students should contextualize the theme, explaining the relevance of the minimum and molecular formulas in chemistry and the application of these concepts in the real world. The report should outline the objective of the game created.

2. Development: In this section, the group should explain the theory of the project's core concepts (minimum and molecular formulas), detail how the game was created, the methodology used, and present and discuss the results obtained through the games played.

3. Conclusion: The students should recap the main points presented in the report, discuss what they learned during the project, and the conclusions drawn from it.

4. Bibliography: The group should indicate the sources they used to work on the project, such as books, web pages, videos, etc.

Combining practical activity with written reflection aims to provide students with a better understanding of the topic, in addition to stimulating critical thinking, teamwork, and time management skills.