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Atom
| Term | Definition |
|---|---|
| Atom | Basic unit of chemical element |
| Electrons | Subatomic particle with negative charges |
| Protons | Subatomic particle with positive charges |
| Neutron | Subatomic particle with neutral charges |
| Nucleus | Central part of atom with protons and neutrons |
| Atomic number | Number of protons in the nucleus of an atom |
| Atomic Mass | Mass of an atom of chemical element |
| Atomic number | Total number of protons and neutrons in a nucleus |