Fruits in Effervescent
30-45 min
8-13
What Will You Learn?
You will learn about the PH, acids and bases that we find around us, as well as chemical reactions of neutralization and change of matter with bubbly chemical reactions to increase our curiosity.
Engage
A great idea to do prior to our project is to ask, Do you know that there is a unit of measurement that indicates the degree of acidity of a solution? Did you know that there are acids around us?
Make Your Dough
Step 1
Take the bowl, and add baking soda, soap, and water. Start mixing using your hands.
Step 2
Since you will create fruits, add the color that you prefer and keep mixing until it comes together.
One tip, if your dough still doesn’t bind very well and crumbles, add a little water to bind it. If it’s too soft, add baking soda to make it firmer.
Create Your Fruit
Step 3
Take the mixture from your bowl and form your fruit (sphere). You can also add a leaf to decorate.
Step 4
The last step, add the vinegar and watch the chemical reaction start.
It is the moment of the sensory experience, it begins to interact with the reaction.
Step 5
What is happening?
What is happening to your fruit is a chemical reaction, and in a chemical reaction, the molecules change! Vinegar reacts with baking soda and a product of this reaction is carbon dioxide gas. This explains the fun fizzy bubbles that pop out of your apples!
Our chemical reaction is about PH, this tells us when substances are acidic or basic. and this depends on the concentration of hydrogen ions in a solution. Acids have a high concentration and bases a low concentration.
Vinegar is an acid, and baking soda is the base, when mixed together they create salts and water as a result, producing carbonic acid, which then breaks down into water and carbon dioxide.
which means it is a neutralization reaction
The acid will give protons, the base will receive it, neutralizing the pH it will balance, giving a chemical reaction.
What's Next?
You can experiment by changing the colors and shapes, creating new fruits.
Take it Further?
Using what we learned in this project you can experience more of this reaction, creating an air rocket, which will help you observe the carbon dioxide that our reaction creates.
Using a plastic bag, colored leaves, tape, a straw, baking soda, and vinegar can take your creativity further.
Reflection
They can share their experiment and explanation with their parents and friends, to develop more scientific skills and share what they have learned. Likewise, you can look for this same reaction around us, for example when we eat something spicy or acid like lemon, we suffer from heartburn, and to neutralize, we use antacids (Bases).
Further Resources
Videos
Ted-Ed: https://youtu.be/DupXDD87oHc
Khan Academy: https://youtu.be/J7-GewgqWUQ
About MoonMakers
MoonMakers — led by Camila and Diego Luna — are a community of creators passionate about knowledge. A Makerspace, an open space with different digital manufacturing machines. And a YouTube channel where we promote science, technology and the maker movement.
MoonMakers have collaborated with companies such as: Sesame Street, Make Community and in Mexico with Educational Television and Fundación Televisa, creating educational content.
We have given workshops throughout the Mexican Republic with: Talent Land, Secretary of Education in Jalisco, Conacyt, Centro Cultural España.
Materials:
- 1½ cup of baking soda
- 1 cup of vinegar
- 2 tablespoon water
- 2 tablespoon liquid soap (dishwasher preferred)
- Bowl
- liquid colorant, the color you want
Vocabulary:
- PH: It is the abbreviation of hydrogen potential, it is a parameter that indicates the concentration of hydrogen ions [H] + that exist in a solution. In other words, it is a unit of measurement that indicates the degree of acidity of a solution. PH values vary on a scale from 0 to 14.
- Acids: It is any chemical compound that, when dissolved in water, produces a solution with a hydronium cation activity greater than pure water, that is, a pH less than 7
- Bases or alkalis: A solution that has the ability to neutralize acids.
- Chemical reactions: Chemical bonds between atoms are broken and new bonds are formed. Two types of substances are involved in this process: those that we initially have and know as reactants and those that are obtained after the chemical reaction, called products.
- Change in the state of matter: it is called a change of state to the evolution of matter between various states of aggregation without a change in its composition occurring.
- Neutralizing reactions: A neutralization reaction is one in which an acid reacts with a base. In the reaction a salt is formed and in most cases water is formed.
