||Anything that mass and takes up space.
||Composed of one type of an atom and cannot be broken down into a simpler substance.
||The smallest particle into which an element can be divided and still have the properties of that element.
|4. Subatomic Particle
||Particles smaller than an atom, that combine together to form an atom. (Protons, Neutrons, Electrons)
||A positively charged subatomic particle that resides within the atomic nucleus.
||A subatomic particle contained n the nucleus. It has NO net electric charge, unlike the proton's positive electric charge.
||A subatomic particle that carries a negative electrical charge, and resides outside of the nucleus.
|8. Valence Electron
||An electron in the outer most shell (energy level) of an atom, which can combine with other atoms for form molecules.
||The center of an atom where all of the mass of that atom is located. It is make up of protons and neutrons.
|10. Electron Cloud
||The region arond the nucleus of an atom, where electrons are found.