Across
- 4. a mixture of two or more metals
- 7. the center of an atom
- 8. formed gaing one electron
- 10. the number of protons in a nucleus
- 12. elements that never react with other elements
- 13. a uncharged particle
- 14. a vertical column on the periotic table
- 16. a model showing the possible outcomes of a electron
- 17. a positively charged particle
Down
- 1. a negatively charged particle
- 2. very reactive non-metals
- 3. a horizontal column on the periodic table
- 5. gains or loses atoms
- 6. an element that is a good conductor of electricity
- 9. cannot be shaped
- 11. have a different number of neutrons
- 15. formed losing one electron