Science

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Across
  1. 1. Substance with a pH greater than 7
  2. 4. Substance formed from two or more elements
  3. 10. Six-legged invertebrate
  4. 11. Cold-blooded vertebrate with scales
  5. 14. Force that attracts objects toward Earth
  6. 15. Green pigment in plants
  7. 19. Community of interacting organisms
  8. 21. Process by which plants make food
  9. 24. Substance with a pH less than 7
  10. 27. Infectious agent that requires a host
  11. 29. Negatively charged subatomic particle
  12. 30. Carries genetic information
  13. 32. Atoms of the same element with different neutrons
  14. 34. Homogeneous mixture of solute and solvent
Down
  1. 2. Basic unit of matter
  2. 3. Pure substance consisting of one type of atom
  3. 5. Substance with a pH of 7
  4. 6. Warm-blooded vertebrate with hair or fur
  5. 7. Aquatic vertebrate with gills
  6. 8. Neutral subatomic particle
  7. 9. Combination of two or more substances
  8. 12. Positively charged subatomic particle
  9. 13. Two or more atoms bonded together
  10. 16. Cold-blooded vertebrate that lives both on land and in water
  11. 17. Substance formed from two or more elements
  12. 18. Warm-blooded vertebrate with feathers
  13. 20. Combination of two or more substances
  14. 22. Protein that speeds up chemical reactions
  15. 23. Kingdom of decomposers
  16. 25. Substance formed from two or more elements
  17. 26. Single-celled microorganisms
  18. 28. Structural unit of life
  19. 31. Nerve cell
  20. 33. Essential for respiration