| terms |
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| definition |
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| Nucleus |
The center of an atom, made up of protons and neutrons |
| Proton |
A positively charged subatomic particle in the nucleus of an atom |
| Neutron |
A neutral subatomic particle in the nucleus of an atom. |
| Electron |
A tiny negatively charged subatomic particle moving around outside the nucleus of an atom. |
| Energy Level |
Any of the possible energies an electron may have in an atom. |
| Orbital |
A region in an atom where there is a high probability of finding electrons. |
| Valence Electron |
An electron in the outermost energy level of an atom. |
| Cation |
An ion with a positive charge. |
| Anion |
An ion with a negative charge. |
| Group ( family) |
A vertical column of elements in the periodic table. |
HHS Shrek
