Across
- 3. , the smallest part of an element that can exist
- 6. , the negatively charged particle
- 9. , the neutral part of an atom
- 11. , the side that the metals are on the periodic table
- 12. , this is the name of group 2 on the periodic table
Down
- 1. , this is the name of group 8 on the periodic table
- 2. , a substance that only contains one type of atom
- 4. , a positively charged particle
- 5. , this group gets more reactive as you go down its group
- 7. , this group gets less reactive as you go down its group
- 8. , the side that the non-metals are on the periodic table
- 10. , a substance made from more than one type of atom joined together