Across
- 3. members of the elements family
- 4. the mass of an atom
- 5. combine to form composite particles
- 7. the world is made up of these
- 9. a stable subatomic particle
- 10. the air you breath
- 12. founder of atomist ancient history
- 13. Person who made the periodic table
- 15. found in chlorine, bromine, and fluorine
- 16. you put dots next to the symbol
Down
- 1. there not metals
- 2. stuff like iron, copper, tin, platinum
- 6. the number of protons in the nucleus of an atom
- 8. bananas have a lot of this in them
- 11. table full of elements
- 14. found in clean pools