Using the knowledge of acids and bases write a secret message with help baking soda beet root explain how it works?

Materials:

1. Clear glass or plastic containers (such as cups or jars)

2. Baking soda

3. Beetroot juice (freshly extracted or store-bought)

4. Thin paintbrush or cotton swabs

5. Water

Instructions:

Step 1: Write the Secret Message

Take the clear containers and use a thin paintbrush or cotton swab dipped in beetroot juice to write the secret message on the inside surface of the containers. Make sure the message is written discreetly and not easily noticeable.

Step 2: Prepare the Baking Soda Solution

In a separate bowl, mix baking soda with a small amount of water to create a paste-like consistency.

Step 3: Apply the Baking Soda Paste

Use a paintbrush or cotton swab to carefully apply the baking soda paste over the beetroot juice message. Make sure to cover the entire message evenly with the paste.

Step 4: Observe the Reaction

Leave the containers undisturbed for a few minutes. As the baking soda solution comes into contact with the beetroot juice, a chemical reaction will occur, causing the beetroot juice to turn into a greenish-blue color.

Step 5: Reveal the Secret Message

Watch as the secret message slowly starts to appear! The acidic properties of the beetroot juice react with the alkaline baking soda, resulting in a color change that makes the message visible.

How it Works:

- Beetroot juice contains a natural pigment called betalain, which is responsible for its vibrant red color.

- Baking soda is a base that reacts with acids, causing a change in pH levels.

- When the baking soda solution comes into contact with the beetroot juice, it causes a chemical reaction that alters the pH balance. This change in pH causes the betalain pigment in the beetroot juice to transform into a greenish-blue color.

- The reaction is temporary, and the color may eventually fade over time.