Across
- 4. Number of protons in an atom
- 6. an example of a metal on the periodic table
- 8. nuclear particle with no charge
- 11. rows on the periodic table that indicate energy levels
- 12. a type of bond that pairs an anion and a cation
- 14. Number of protons and electrons
- 15. an element with varying numbers of neutrons
- 16. electrons in the outer energy level of an atom
- 17. an example of a nonmetal on the periodic table
Down
- 1. compounds that are ductile, shiny, malleable and conductive
- 2. columns on the periodic table with similar properties
- 3. have a complete valence shell of electrons
- 5. negatively charged atomic particle
- 7. electrons in the complete inner energy levels of an atom
- 9. a number that identifies if an element is a cation or anion
- 10. a visual representation of an element and its valence electrons
- 11. positively charged particle in the nucleus of an atom
- 13. covalent compounds are made of these types of elements