science

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Across
  1. 3. Process plants use to produce food
  2. 4. Transfer of heat through direct contact
  3. 8. Homogeneous mixture
  4. 9. Rate of change of velocity
  5. 12. Substance that is dissolved
  6. 15. Force applied per unit area
  7. 16. Two or more atoms bonded together
  8. 19. Transfer of heat through fluid movement
  9. 21. Group of tissues working together
  10. 23. Ability to do work
  11. 26. Group of similar cells working together
  12. 27. Mass per unit volume
  13. 28. Basic unit of life
  14. 29. Related to heat energy
  15. 31. Smallest unit of an element
  16. 32. Substance with pH greater than 7
Down
  1. 1. Process in which substances change into new substances
  2. 2. Green pigment used in photosynthesis
  3. 5. Organelle that produces energy in cells
  4. 6. Living thing
  5. 7. Substance with pH equal to 7
  6. 10. Transfer of energy through waves
  7. 11. Pure substance with only one type of atom
  8. 13. Process of releasing energy from food
  9. 14. Substance that dissolves another
  10. 15. Rate at which work is done
  11. 17. Community of organisms and their environment
  12. 18. Product of mass and velocity
  13. 20. Substance made of different elements chemically combined
  14. 22. Resistance of an object to a change in motion
  15. 24. Force that attracts objects with mass toward each other
  16. 25. Control center of a cell
  17. 30. Substance with pH less than 7