Across
- 2. vertical column with the same properties
- 4. metal opposite characteristics of a metal
- 5. release of energy with the nucleus
- 7. gases least reactive and in atmosphere
- 8. cloud possible locations of an electron in an atom
- 10. no charge particle
- 11. radioactive
- 13. induce hardness onto metals
- 15. horizontal row with the same properties
- 16. energy with ionizing radiation
- 20. center of an atom with protons and neutrons
- 21. ion ion with more protons than electrons
- 22. an atom with a different number of neutrons
- 24. element that is shiny,conducts electricity, heat
- 25. kill micororganisms+make salt
Down
- 1. unchanging,less reactive
- 3. ion ion with more electrons than protons
- 6. positively charged particle
- 9. element like metals and nonmetals
- 12. number number of protons in an atom
- 14. atom with more or less electrons
- 17. atomic mass unit
- 18. Group 2A of reactive metals
- 19. negatively charged article
- 23. metals Group 1A of reactive metals