Across
- 1. positively charge particle
- 3. the symbol for gold
- 4. element with the symbol Mg
- 10. a chain of molecules with specific properties
- 11. the symbol for silver
- 12. element with the Atomic Number 18
- 15. the building blocks of matter
- 16. more than one atom joined together
- 17. the chart that organizes the elements
- 18. more than one element joined together
Down
- 2. element with 22 protons in the nuclues
- 3. the most basic unit of an element that still has the element's properties
- 5. the number of protons in the nucleus
- 6. element with the symbol H
- 7. anything that occupies space and has mass
- 8. created the first periodic table
- 9. characteristics of a substance
- 11. believed all matter was made from FOUR elements
- 13. negatively charged particle
- 14. a particle with no charge