Across
- 2. that is mixed with at least another element
- 5. of atoms
- 8. mixed together but not chemically
- 9. is the periodic abbreviation of sodium and chloride
Down
- 1. bonded together
- 3. that takes up space
- 4. there how many elements in the periodic table
- 6. are small building
- 7. : is mixed with iron and carbon to make what