Trivia: What is the most basic unit of all matter?
Correct Answer: Atom
So why is this answer correct? : Atoms are the smallest unit of matter that cannot be divided further. Because atoms are the basic unit of all matter, they are considered the building blocks of the universe. The three parts of an atom are the proton (positive electric charge), neutron (neutral charge), and electron (negative charge). Protons and neutrons are found inside the nucleus of an atom, while electrons are found circling the nucleus.