A proton is a subatomic particle with a positive electric charge. Here's what you need to know:

* Location: Protons reside in the nucleus of an atom, along with neutrons.

* Charge: They have a single positive charge (+1).

* Mass: Protons are about 1836 times heavier than electrons.

* Importance: The number of protons in an atom determines its atomic number, which defines the element it is. For example, all carbon atoms have 6 protons.

Let me know if you'd like to know more about protons or other subatomic particles!