Biology Vocab

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Across
  1. 2. Substance composed of two or more elements or compounds that are physically mixed together but not chemically combined
  2. 5. Chemical composed of two elements or more
  3. 8. covalent bonds in which electrons are shared unequally resulting in a molecule which as negative and positive poles
  4. 10. Any compound that forms H+ ions in a solution
  5. 11. The basic unit of a chemical
  6. 12. Attraction between molecules of the same substance
  7. 14. pure substance consisting of all the same type of atom
  8. 17. Substance that does the dissolving
  9. 18. Parts of the mixture are evenly mixed
  10. 19. Substances produced by cells that prevent sharp sudden changes in pH
  11. 20. Attraction between molecules of different substances
Down
  1. 1. Mixture of water and undissolved material
  2. 3. Electrons are shared equally. These bonds exist between identical atoms
  3. 4. Parts of the mixture are unevenly mixed
  4. 6. One or more electrons are transferred from one atom to another
  5. 7. When electrons are gained or lost
  6. 9. When electrons are shared between atoms
  7. 13. A homogeneous mixture. Parts of a solution are evenly mixed
  8. 15. Any compound that forms OH- ions in a solution
  9. 16. Substance that is dissolved