Across
- 6. rings around a nucleus that can have zero, one, or two electrons
- 8. Has a neutral charge (no charge)
- 9. A process that requires absorbed heat
- 11. the P.T.): one of the Horizontal rows on the Periodic Table
- 13. An electron that helps form a chemical bond
- 15. Has a negative charge
- 16. The number of protons in a atom
- 18. An element that has both properties of a metal and a nonmetal
- 20. Its made from a single type of atom and is a pure substance
- 21. The mass of a chemical elements atoms
- 23. letters standing for a chemical element
- 25. Gas: Include helium, neon, argon, krypton, xenon, and radon
Down
- 1. Man who discovered the Periodic Law
- 2. States that mass is neither created nor destroyed by chemical reactions or physical transformations.
- 3. the Result of a chemical reaction
- 4. the P.T.): A numbered column on the Periodic table
- 5. A process with released heat
- 7. Is formed after 2 or more elements are chemically bonded
- 10. An element that isn't a metal
- 12. A solid that is hard, shiny, malleable, fusible, and ductile
- 14. The brain or powerhouse of a cell
- 17. A substance that changes during a chemical reaction
- 19. Has a positive charge
- 22. Groups of atoms bonded together
- 24. Everything is made from this.