Vitamin C

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Across
  1. 2. Add iodine drop by drop and _ _ _ _ _ the cup.
  2. 4. Add _ _ _ _ _ _ drop by drop and swirl the cup.
  3. 5. _ _ _ one millilitre of fruit juice into a cup.
  4. 7. _ _ _ _ _ _ the fruit juice with 100 millilitres of water.
Down
  1. 1. Stop adding the iodine when the colour turns dark _ _ _ _.
  2. 3. The more iodine is added, the more _ _ _ _ _ _ _ C there is.
  3. 6. Add five millilitres of _ _ _ _ _ _ solution.