Valentine's Day Chemistry

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Across
  1. 2. SI unit of energy
  2. 4. Used for storing and pouring liquids
  3. 5. Regard with respect
  4. 7. The flow of heat at constant pressure
  5. 10. Pick 'em, Pluck 'em, Give 'em
  6. 12. Symbols of love and peace
  7. 13. The most celebrated love symbol in ancient Egypt
  8. 14. The basic unit of length
  9. 16. The molecule on the bag
  10. 18. Recognition of gratitude
  11. 20. Represents a lover's emblem in China and Japan
  12. 21. During the middle ages, Europeans used this fruit in love rituals
  13. 23. An organ and a symbol of love
  14. 24. Numbers known and given to us
  15. 25. Any substance consumed
Down
  1. 1. Eros pricked himself with this
  2. 3. "Will you go out with me?"
  3. 6. A flower meaning forever thine to Victorians
  4. 8. Feel deep affection for
  5. 9. What has happened to this once dark celebration
  6. 11. changing numbers to appropriate sig figs
  7. 15. An instrument used to deliver a known amount of liquid
  8. 16. Most famous Valentine's candy
  9. 17. The deceptive displacement of the meniscus in at graduated cylinder
  10. 19. To zero out an analytical balance
  11. 22. Symbol of valentine's day
  12. 26. God of Desire in classical mythology