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Chapter 4 Vocabulary
Question | Answer |
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Nucleus | The dense, positively charged mass located in the center of an atom. |
Proton | A positively charged subatomic particle that is found in the nucleus of an atom. |
Neutron | A neutral subatomic particle that is found in the nucleus of an atom. |
Atomic Number | A unique number for each element that equals the number of protons in the atom of that element. |
Mass Number | The sum of the number of protons and neutrons in the nucleus of an atom. |
Isotopes | Atoms of a given element that have different numbers of neutrons and different mass numbers. |
Energy Levels | The possible energies that electrons in an atom can have. |
Electron Cloud | A visual model of the most likely locations for the electrons in an atom. |
Orbital | A region of space around the nucleus where an electron is likely to be found. |
Electron Configuration | The arrangement of electrons in the orbitals of an atom. |
Ground State | A state in which all the electrons in an atom have the lowest possible energies. |
Electrons | A negatively charged subatomic particle that is found in the space outside the nucleus of an atom. |