human
What are some of the most interesting facts about the atom?
assistant
1. The smallest unit of an atom is called a proton. It has a positive charge and is made up of three quarks.
2. An atom is composed of protons, neutrons, and electrons. Protons have a positive charge, while neutrons have no charge. Electrons are negatively charged.
3. Atoms are the basic building blocks of all matter. All atoms are composed of protons, neutrons, and electrons.
4. Each element has its own unique atomic number, which refers to the number of protons in an atom's nucleus. For example, hydrogen has one proton, carbon has six, and oxygen has eight.
5. There are 118 known elements in the periodic table.