Across
- 2. gases odorless gases
- 4. an uncharged particle
- 8. cloud the space around the nucleus
- 10. the release of ionizing radiation
- 13. an element that doesn't conduct electricity
- 14. metals very reactive elements
- 15. when an atom loses or gains an electron its now a
- 17. an element that varies between metal and nonmetal
- 19. if you gain one of these its a new element
- 21. ion when an atom loses an electron
- 23. ion when an atom gains an electron
Down
- 1. a column in the periodic table of elements
- 3. number the number of protons in the nucleus
- 4. made up of protons and neutrons(also the center of an atom)
- 5. decay when a nucleus loses radiation
- 6. 15 elements in the periodic table
- 7. can be in multiple places around an atom at once
- 9. metals metallic elements
- 11. 5 nonmetallic elements in the periodic table
- 12. metals strongly basic metals
- 14. 15 metallic elements atomic number 89
- 16. average mass unit
- 18. a row of elements
- 20. the same element with a different number of neutrons
- 22. a substance with high electricity