Across
- 3. In the nucleus; no charge
- 6. Row
- 7. The mass of reactants= mass of products in chemical reaction
- 12. A region surrounding an atomic nucleus
- 13. developed Periodic Table
- 19. energy is released
- 21. Energy is absorbed
- 23. Center of atom
- 24. A layer of metal is bonded to the surface of another substance
- 25. The smallest segment of an element
Down
- 1. Chemically the simplest substance
- 2. Column
- 4. Gasses with a full outer rim
- 5. The abbreviation of an element
- 8. electrons in the outer most orbital
- 9. brittle, not malleable, not ductile, poor conductors, some liquids
- 10. The number of protons in the nucleus
- 11. The number of protons and neutrons
- 14. Partially conduct electricity
- 15. A group of atoms bonded together
- 16. what is mixed to create a chemical reaction
- 17. Circles nucleus; negative charge
- 18. what is created in a chemical reaction
- 20. 2 or more different kinds of atoms
- 22. solid, shiny, conduct heat and electricity, ductile, malleable
- 24. In the nucleus; positive charge