Across
- 2. can bond with themselves
- 3. the number of protons
- 5. abbreviation of elements
- 7. a positively charged particle
- 9. two or more substances together that are not chemically combined
- 10. combined number of protons and neutrons
Down
- 1. have 7 outer electrons
- 4. positively charged particle
- 6. shows signs of both metals and nonmetal
- 8. neutraly charge partical