Across
- 1. number below and next to an element symbol
- 5. element on the left of the periodic table that is shiny and malleable
- 8. formed when atoms combine with ionic bonds
- 10. molecule made from two atoms of the same element
- 13. a positive ion
- 15. positively charged particle in the nucleus
- 17. molecule that doesn't contain carbon
- 19. number on the periodic table that tells the number of protons
Down
- 2. bond formed when two nonmetals share electrons
- 3. a charged atom with a different number of electrons and protons
- 4. a negative ion
- 6. formed when atoms combine with covalent bonds
- 7. electron in the outside energy level
- 9. neutral particle in the nucleus
- 11. smallest building block of matter
- 12. number in front of a chemical formula
- 14. molecule that contains carbon
- 16. negatively charged particle outside the nucleus
- 18. element on the right of the periodic table that is dull and brittle
- 20. bond formed when a metal transfers an electron to a nonmetal