Across
- 1. electrically charged atom
- 6. second to last group on periodic table
- 7. a chemical element and is elements lies between metals and nonmetals
- 9. vertical row on the periodic table
- 10. horizontal row on the periodic table
- 11. a substance which its identity is changed
- 12. its what you call things that have been mixed
- 14. the right side of he periodic table
- 15. a negative charged atom
- 16. an atom can be a positive, or negative charged _______
- 18. a positive charged atom
- 19. group of elements with similar chemical properties
Down
- 2. the center of an atom
- 3. a mixture in which its identity doesn't change
- 4. a neutral charged atom
- 5. holds protons,nucleus,electrons
- 8. the number of protons in the nucleus
- 13. a substance that hold atoms
- 17. mass mass of an atom