Elements

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Across
  1. 3. made up of hydrogen and oxygen
  2. 4. are able to be drawn into thin wires
  3. 7. chemical symbol are a shorthand way to write the names of the..
  4. 9. orbit around the nucleus an have negative charge
  5. 11. made up of sodium and chlorine
  6. 12. a repeating pattern
  7. 13. makes 1% of the atmosphere
  8. 14. shorthand way of writing the names of...
  9. 18. are neutral
  10. 19. elements that have the properties of luster, ductility, and malleability
  11. 20. simple substances that cannot be broken down into simpler substances
Down
  1. 1. made up of carbon, oxygen and hydrogen
  2. 2. a horizontal row of elements in the periodic table
  3. 5. six elements that make up the last group in the periodic table of the elements
  4. 6. elements that have none of the properties of metals
  5. 8. shines
  6. 10. a vertical column of elements in the periodic table
  7. 15. number of protons found in the nucleus if atom
  8. 16. are positively charge
  9. 17. made up of copper and zinc