What is Acid?
Acids are substances that can donate protons (H+) in a solution. They are characterized by their sour taste, ability to conduct electricity, and their reactions with bases and metals. Most acids are corrosive and can be found in various forms, including strong and weak acids.

Types of Acids
- Strong Acids: These completely dissociate in water, releasing all their protons. Examples include:
- Hydrochloric acid (HCl)
- Sulfuric acid (H₂SO₄)
- Weak Acids: These only partially dissociate in water. Examples include:
- Acetic acid (CH₃COOH)
- Citric acid (C₆H₈O₇)

Acids and Their Properties
- Sour Taste: Many acids, like citric acid in lemons, are known for their sour flavor.
- pH Level: Acids have a pH less than 7.
- Reactivity: Acids react with bases to form salts and water, a process known as neutralization.

Turmeric as a Natural Indicator
Turmeric is a natural pH indicator that changes color based on the acidity or alkalinity of a solution.
- Acidic Solutions: When turmeric is added to an acidic solution, it turns red.
- Neutral or Basic Solutions: In neutral or basic solutions, turmeric remains yellow.

How to Use Turmeric as an Indicator
1. Preparation: Mix turmeric powder in water to create a turmeric solution.
2. Testing: Add a few drops of the turmeric solution to the liquid being tested.
3. Observation: Note the color change to determine if the solution is acidic or basic.
Using turmeric as a natural indicator offers a safe and fun way to explore the properties of acids and bases!