Across
- 2. H,CA,O,NA, what are these?
- 4. atomic number = protons = neutrons
- 5. the basic unit of a chemical element
- 8. 3H₂ , what is the 3 called?
- 10. no charge
- 11. (2 words, no space) the quantity of matter contained in an atom of an element.
Down
- 1. shiny, good conductor
- 3. negative charge
- 6. positive charge
- 7. insulator, dull
- 9. 3H₂ , what is the 2 called?