chemistry tic tac toe

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Across
  1. 5. Which state of matter is wood?
  2. 8. which subatomic particle has a positive electrical charge?
  3. 9. which subatomic particle has no electrical charge?
Down
  1. 1. which state of matter is water?
  2. 2. which state of matter is helium?
  3. 3. what type of substance is water(H20)?
  4. 4. which subatomic particle has a negative electrical charge?
  5. 6. what is the periodic table full of?
  6. 7. what is the name of a building block of matter?