* Nucleus: The nucleus is located at the center of the atom. It's incredibly small, but it contains almost all of the atom's mass.
* Electron Cloud: The electron cloud surrounds the nucleus. It's not a solid cloud, but rather a region of space where electrons are most likely to be found. The electrons are constantly moving and their exact location can't be pinpointed.
Think of it like this:
Imagine a tiny marble (the nucleus) in the center of a large, empty room (the atom). The electrons (tiny specks of dust) are constantly moving around the room, never landing in one spot for too long. The room represents the electron cloud.
Key Points:
* The nucleus is positively charged due to the presence of protons.
* The electron cloud is negatively charged due to the presence of electrons.
* The attraction between the positive nucleus and the negative electrons is what holds the atom together.
