Nicola's spelling word crossword puzzle

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Across
  1. 4. partials or moisture
  2. 5. a proposition
  3. 8. left then right, something in maths
  4. 9. to vary or change
  5. 10. the state of being condensed
  6. 11. a cloud
  7. 12. something you do in science
Down
  1. 1. something you do in maths
  2. 2. when water disappears
  3. 3. when you see something
  4. 6. water or a drink
  5. 7. the act