* The pH scale: The pH scale measures the acidity or alkalinity of a solution. It ranges from 0 to 14.

* 0 to 6.9: Acidic solutions

* 7.0: Neutral (like pure water)

* 7.1 to 14: Alkaline (or basic) solutions

* A pH of 3: A pH of 3 is significantly acidic. The lower the pH number, the stronger the acid.

Examples of solutions with a pH of 3:

* Lemon juice: Has a pH of around 2-3.

* Vinegar: Has a pH of around 3.

* Some fruit juices: Some fruit juices, like orange juice, can have a pH around 3.

* Certain cleaning products: Some cleaning products, like toilet bowl cleaners, can be very acidic.

Important Note: Always handle acidic solutions with caution, as they can be corrosive and potentially harmful.