Answer:
Matter - Anything that has mass and takes up space (volume).
Atoms - Smallest possible unit into which matter can be divided, while still maintaining its properties.
Protons - Positively charged particles.
Neutrons - Neutral particles; have no electric charge.
Electrons - Found Outside the nucleus.
Atomic Number - The number of protons in the nucleus of an atom.
Atomic Mass - Number of protons and Neutrons in the nucleus.