Periodic Table

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Across
  1. 2. The table that features hydrogen and oxygen
  2. 3. A famous periodic graph for elements
  3. 5. Helium is this type of element
  4. 7. A kind of matter with special properties
  5. 8. Made of reactants
Down
  1. 1. Ingredients for a product (scientifically)
  2. 4. There are 118 of these
  3. 6. The number that labels each item on the periodic table