Across
- 4. collumns on a periodic table
- 5. negative charge
- 8. the substances after change are called
- 10. where electrons are found (2 words)
- 12. the weight of an element(2 words)
- 13. the smallest unit of matter
- 15. positively charged
- 17. the number before a chemical formula
- 19. shiny and malleable
Down
- 1. electrons in the last shell(2 words)
- 2. the small number in a chemical formula
- 3. a group of atoms
- 6. the substances before change are called
- 7. neutrally charged
- 8. rows on a periodic table
- 9. the formula of an element (2 words)
- 11. used to organize elements(2 words
- 14. levels in the electron cloud (2 words)
- 16. where elements are organized (2 words)
- 18. a pure substance that cannot be broken down