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Atoms
Atoms - Chapter 4 Vocab
Word | Definition |
---|---|
Nucleus | the very small center core of an atom |
Isotope | Atoms of the same element, that have a different number of neutrons in their nuclei |
Electrons | Move rapidly around the nucleus and have a negative electric charge |
Protons | have a positive electric charge |
Nucleus | The tiny, extremely dense, positively charged region in the center of an atom; made up of protons and neutrons |
Neutrons | have no charge |
Atomic Number | The number of protons in the nucleus of an atom |
Atomic Mass | The number of neutrons plus the number of protons in the nucleus of an atom |