โครงงานวิทยาศาสตร์ประเภททดลอง"น้ำยาล้างจานใช้ได้จริง ทำด้วยใจ" โรงเรียนวัดช่างทอง(บุญบำรุงราษฎร์

Summary

The project demonstrates the creation of an affordable and effective dishwashing liquid using natural ingredients, specifically guava. The goal is to produce a cleaner that works well to remove grease and stains while being eco-friendly and cost-effective. The liquid utilizes surfactant properties to clean efficiently, with the added benefit of being homemade and reducing household expenses. The project also explores using other natural materials like butterfly pea and pandan leaves for additional color and fragrance. Despite some challenges with scent, the team successfully developed a functional, budget-friendly product.

Takeaways

• 😀 The project is conducted by elementary students from grades 5 and 6 under the guidance of their teachers.
• 😀 The project is focused on creating a homemade, low-cost dishwashing liquid from natural ingredients like guava.
• 😀 The purpose of the project is to develop a dishwashing liquid that effectively cleans dishes, is safe, and saves on expenses.
• 😀 The project is based on the principle of surface tension, which helps remove grease and grime from dishes more easily.
• 😀 The main ingredients used include guava, salt, food coloring, and water, with the guava acting as the key agent due to its properties.
• 😀 The students aim to find the ideal proportions of ingredients to make an effective dishwashing liquid.
• 😀 Their hypothesis suggests that the homemade dishwashing liquid can clean effectively and reduce costs compared to commercial products.
• 😀 The experiment shows that the homemade liquid works as well as commercial products in removing grease, though it has a less pleasant scent.
• 😀 The homemade liquid uses less product to achieve similar cleaning results, making it more economical.
• 😀 Despite its effectiveness, the homemade dishwashing liquid lacks the strong scent and aesthetic qualities of commercial products, which are more visually appealing and aromatic.
• 😀 Future improvements to the project include using other natural materials, like butterfly pea or pandan leaves, to enhance the scent and appearance of the dishwashing liquid.

Q & A

What is the main topic of the project discussed in the script?

The project focuses on creating a low-cost, homemade dishwashing detergent using natural ingredients, specifically guava, aimed at improving dish cleaning efficiency and reducing costs.

What is the key scientific principle behind the homemade dishwashing detergent?

The key scientific principle used is surface tension, which helps break down grease and dirt, allowing them to be removed more easily from dishes.

What is the goal of the project regarding the homemade dishwashing detergent?

The goals are to determine the optimal ratio of ingredients to create an effective dishwashing detergent, to provide a cheaper alternative to commercial dishwashing detergents, and to offer a basis for further research and development.

What materials were used in the creation of the homemade dishwashing detergent?

The materials included guava fruit, salt, food coloring, detergent, water, and aluminum mixing bowls.

What are the benefits of using guava in this project?

Guava was chosen because it contains properties that help break down dirt and grease, and it is a natural, inexpensive ingredient that can be easily sourced.

How does the homemade dishwashing detergent compare to commercial products in terms of effectiveness?

The homemade detergent performs similarly to commercial dishwashing detergents in removing grease and dirt, but it has a less pronounced fragrance and requires a smaller quantity for use.

What challenges were faced during the project?

One of the challenges faced was that the guava's scent was faint and became even more diluted when boiled, making the homemade detergent less fragrant compared to commercial products.

What were the key findings of the experiment?

The key findings were that the homemade dishwashing detergent effectively cleaned dishes, was cost-effective, and used fewer resources compared to traditional dishwashing liquids, but it lacked a strong fragrance.

What future improvements are planned for the project?

Future improvements include experimenting with other natural ingredients, such as butterfly pea flowers, pandan leaves, and lemongrass, to enhance the fragrance and appearance of the detergent.

How did the students contribute to the success of the project?

The students worked collaboratively, applying scientific methods, problem-solving skills, and teamwork, which helped them create a functional and cost-effective homemade detergent.