Across
- 1. Elements near each other on the periodic table with similar properties.
- 6. Protons and Neutrons added together
- 7. Particle with a negative charge. Located in orbitals.
- 10. The name for a row of the periodic table
- 11. The center of an atom
- 13. Atoms of the same element with different numbers of neutrons
- 14. Color of light made from all the wavelengths of light
Down
- 2. The number of protons in an atom
- 3. The smallest particle of an element
- 4. Particle with no charge(neutral). Located in the nucleus.
- 5. Particle with a positive charge. Located the nucleus.
- 8. Family made from elements in group 18 of the periodic table
- 9. The name for a column on the periodic table
- 12. Type of electron that is in the outermost energy level of an atom