Periodic table

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Across
  1. 2. A element on the periodic table that is shiny and has a mass of 197u
  2. 3. A element on the periodic table that is used to blow up balloons and has an atomic number of 2
  3. 4. A element that is the exact opposite of metals
  4. 6. A horizontal row on the periodic table
  5. 7. A element that is a mixture of metals and nonmetals
  6. 9. Someone who had the idea and designed the periodic table
  7. 11. A soft and silver element on the periodic table that has a mass of 23u
  8. 12. A chemical on the periodic table that goes by the atomic number 5
Down
  1. 1. The number above an element on the periodic table(Also symbolizes which element is which)
  2. 2. A vertical collum on the periodic table
  3. 3. is A element that is colorless, odorless and has an atomic number of 1 on the periodic table
  4. 5. The total amount of protons and neutrons in a neuclus
  5. 8. A hard material with the following qualities: Shiny, solid, malleable, and used a lot in our lives
  6. 10. A type of substance located somewhere on the periodic table