Potassium carbonate is a very special type of salt that is made up of two things: potassium and carbonate. Potassium is a mineral that your body needs to stay healthy, and carbonate is a special type of molecule made up of atoms called carbon and oxygen.
When you mix potassium and carbonate together, they can make some really cool things happen! Sometimes, people use potassium carbonate to help plants grow by making the soil better. It can also be used in some types of cleaning products to help get things really clean.
But you have to be careful with potassium carbonate, because if you eat too much of it or touch it with your bare skin, it can be dangerous. That's why you should always let a grown-up who knows what they're doing handle it.
Overall, potassium carbonate is a special type of salt that can be very useful, but also dangerous if not handled correctly.