Crossword science

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Across
  1. 2. a purple vegetable
  2. 4. H2O
  3. 5. you put water or any other liquid
  4. 6. you can warm your food, boil water
Down
  1. 1. Object that helps to take pictures
  2. 3. sodium chloride
  3. 4. made of natural, synthetic fibers
  4. 7. Need mechanical refrigeration