9X1's Xmas Xword

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Across
  1. 3. Santa will feel more of this than you will
  2. 5. characteristic formed from allele pairing
  3. 10. a yuletide log does this
  4. 11. metal bells are this
  5. 13. best controlled when you can smell Christmas dinner
  6. 18. use this to see how cold it is on Christmas day
  7. 20. two copies of the same allele
  8. 23. complete reaction between and acid and alkali
  9. 24. output of a chemical reaction
  10. 25. another way to describe thermal energy
  11. 26. hope Santa doesn't get caught in one of this on Christmas eve
  12. 28. reaction with plenty of oxygen present
  13. 32. we don't get a lot of this from the sun during the winter months
  14. 34. scale where 0 is freezing and 100 is boiling (water)
  15. 36. the fourth planet from the sun
  16. 38. nutrient that Santa has overindulged on
  17. 39. there isn't any of this when reindeer fly
  18. 40. glass vessel to hold liquids
Down
  1. 1. able to be picked up by a magnet
  2. 2. turns cloudy in the presence of carbon dioxide
  3. 4. turns black in the presence of starch
  4. 6. Miss' Christmas angel
  5. 7. zero no energy
  6. 8. in your chocolate orange and candy canes
  7. 9. dark things do this really well
  8. 12. energy giving nutrient best roasted
  9. 14. family favourite for science geeks
  10. 15. turns red in the presence of glucose
  11. 16. where your Christmas dinner is absorbed
  12. 17. pots and pans need this to cook Christmas dinner
  13. 19. Santa has more of this than you do
  14. 21. a measure of energy
  15. 22. elves need lots of this in the north pole to keep warm
  16. 27. what you have to polish off the good silver before dinner
  17. 29. enzyme that breaks down turkey into amino acids
  18. 30. when reindeer fly they give off heat
  19. 31. enzyme that emulsifies fats
  20. 33. what snowmen have to do in the Spring if they want to stay alive
  21. 35. white things do this really well
  22. 37. stars do this