Across
- 2. covering with a coat of gold, silver, or other metal
- 8. Eelements lack metallic attributes
- 9. conducts electricity
- 10. mass of atomic particle in an element
- 11. can be broken down into simpler substances
- 12. states mass is isolated
- 18. developed the periodic table
- 22. vertical column of elements
- 24. 2 or more separate elements
- 25. the release of heat
- 26. positive electric charge
Down
- 1. no Net-electric charge
- 3. 1 or 2 letters abbreviating and element
- 4. potential patterns of electron density
- 5. has a negative charge
- 6. absorption of heat
- 7. core of an atom
- 13. source of nuclear energy
- 14. outer shell of an atom
- 15. gaseous element
- 16. properties between metal and non-metal
- 17. number of protons in an element
- 19. group of atoms bonded together
- 20. element presents a chemical reaction
- 21. horizontal row, atomic number increase left to right
- 23. formed when a reaction goes to completion