biology vocab

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Across
  1. 6. electrons shared equally
  2. 9. evenly mixed
  3. 11. compound that forms OH- ions concentration
  4. 12. forms H+ ions in a solution
  5. 13. water and undissolved material
  6. 17. electrons are shared between atoms
  7. 19. the chemical combination of two or more elements
Down
  1. 1. substances mixed physically
  2. 2. basic unit of matter
  3. 3. substance that dissolves
  4. 4. electrons are shared unequally
  5. 5. homogeneous mixture
  6. 7. attraction between molecules of diffrent substances
  7. 8. unevenly mixed
  8. 10. pure substance consisting of the same type of atom
  9. 11. cells that prevent sharp, sudden changes in PH
  10. 14. attraction between molecules of same substance
  11. 15. substance dissolved
  12. 16. bond formed when electrons are transfered
  13. 18. an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.