Chemistry Crossword 1 - 20

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Across
  1. 2. Its most common isotope does not have any neutrons.
  2. 9. The center of an atom is called the _________________.
  3. 12. Electrons, Elements in the same group have similar properties because they have the same number of what…?
  4. 13. What non-metal family is the most reactive.
  5. 15. How likely an element is to undergo a chemical change.
  6. 16. Something can be hammered into thin sheets if struck, rather than having it shatter.
  7. 18. What side of the periodic table are metals found on?
  8. 19. Horizontal rows in the periodic table.
  9. 20. Elements that conduct electricity, are shiny, heat well and are easily shaped, and are solid at room temperature (except mercury).
Down
  1. 1. Elements the do not conduct electricity, are not shiny and do not conduct heat.
  2. 3. Vertical columns in the periodic table.
  3. 4. Protons have a _______ charge.
  4. 5. Elements with properties between metals and nonmetals.
  5. 6. Neutrons have a ________ charge.
  6. 7. Most elements in the periodic table are found in the ___________ state.
  7. 8. mass, Average mass of one atom of an element.
  8. 10. Electrons have a ________ charge.
  9. 11. metals, What metal family is the most reactive.
  10. 14. symbol, A one or two letter abbreviation of the element's name.
  11. 17. Gases, Group of unreactive elements.