Think of a lemon. When you taste it, it feels sour on your tongue. That sourness comes from something called an acid. Acids are like tiny invisible helpers that make things taste sour. They are in some of your favorite fruits like oranges and strawberries.
Imagine a superhero wearing a cape. Acids are like superheroes in your stomach. They help break down the food you eat so that your body can use it to grow and play. Without acids, your food would just sit there and not be very helpful.
Picture a bubble bath. When you put a fizzy tablet in water, it bubbles and fizzes. Some acids can make things bubble up like that too. They can be fun and exciting, just like a bubble bath.
Think of an eraser. Acids can be like erasers for stains. When you have a stain on your clothes, some acids can help remove it, just like how an eraser removes pencil marks on paper. They help make things clean and bright.