Periodic Table

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Across
  1. 2. the periodic table of elements
  2. 5. the element we breath
  3. 7. the top part of an element
  4. 8. the bottom part of an element
  5. 9. protons have what charge
Down
  1. 1. the element that creates poison
  2. 3. Smalled unit of matter
  3. 4. neutrons have what charge
  4. 6. electrons have what charge