Biology Unit 1.1

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Across
  1. 3. material physically mixed together but not chemically combined
  2. 6. ____ bond: attraction between a hydrogen atom and another atom(2 words)
  3. 7. attraction of molecules of the same substance
  4. 9. ____ forces: forces that exist between molecules(2 words)
  5. 10. mixture of water and nondissolved material
  6. 12. small units
  7. 13. Negatively particles found in electron cloud
  8. 14. large units
  9. 17. dissolving substance in a solution(ex: water)
  10. 19. Atomic ____: weighted average of the masses of element’s isotopes(2 words)
  11. 20. Basic unit of matter
  12. 21. ____ Number: Number of protons(2 words)
  13. 23. attraction between molecules of different substances
  14. 24. uneven distribution of electrons
  15. 27. ____ Action: tendency of water to rise in a thin tube(2 words)
  16. 28. chemical combination of 2 or more elements
  17. 29. ____ bond: share electrons(2 words)
Down
  1. 1. ____ shell: outer electron shell(2 words)
  2. 2. mixture where components are evenly distributed
  3. 4. same element but different mass number
  4. 5. ____ bond: transfer electrons(2 words)
  5. 8. Positive particles found in the nucleus
  6. 11. Neutral particles found in the nucleus
  7. 15. Substance that consists of a type of atom
  8. 16. molecules forming ionic or a hydrogen bonds with water molecules
  9. 17. substance that is dissolved in solution(ex: sugar, salt)
  10. 18. ____ forces: forces that hold atoms together within a molecule(2 words)
  11. 22. ____ Number: Number of protons and neutrons(2 words)
  12. 25. nonpolar molecules that repel water molecules
  13. 26. large molecules made from smaller ones