Periodic Table of Elements

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12345678910111213141516171819
Across
  1. 3. Colorless, odorless, and tasteless noble gas.
  2. 5. Used in flares/fireworks is found in group 2 of the periodic table.
  3. 8. Most common thing in air 78 percent.
  4. 9. Used in balloons and is a noble gas.
  5. 10. Group 14 period 2.
  6. 11. Strong unpleasant odor; crucial element in many industrial processes.
  7. 13. Used in salt and baking soda.
  8. 16. The atomic number is 3.
  9. 17. Second most common thing in the air, at 21 percent.
  10. 18. A city in California is named after this element.
  11. 19. Tons of this is in the human bone.
Down
  1. 1. The atomic number is 5.
  2. 2. Group 2, period 2.
  3. 4. Group 15, period 3.
  4. 6. Noble gas, bright colors.
  5. 7. A banana is an abundant source of this element.
  6. 9. The lightest and most abundant element in the universe, often found in water.
  7. 12. The atomic number is 9.
  8. 14. The atomic number is 13.
  9. 15. Found in swimming pools and is used in salt.