Across
- 2. A chart in which all known elements are listed in order of atomic number.
- 4. An extremely small negatively charged subatomic particle found outside the atomic nucleus.
- 6. A count of the number of protons in the atomic nucleus.
- 7. A representation of an object on some convenient scale
- 8. Any material that is made up of only one type of atom.
- 10. a positively charged subatomic particle in the atomic nucleus
Down
- 1. A representation of a system that helps us predict how the system behaves.
- 3. Any member of a set of atoms of the same element.
- 5. An electrical neutral subatomic particlein the automic nucleus.
- 9. Any subatomic particle found in the atomic nucleus