Chemistry study guide

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