Science

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Across
  1. 2. make (a liquid) thinner or weaker by adding water or another solvent to it.
  2. 4. showing or involving great activity or vitality.
  3. 6. clearly stated or decided; not vague or doubtful.
  4. 7. the greater number.
Down
  1. 1. wholly directed to one thing; intense.
  2. 2. cause (something) to change direction by interposing something.
  3. 3. a minute portion of matter.
  4. 4. based on, concerned with, or verifiable by observation or pure logic.
  5. 5. not helping or supporting either side in a conflict.