unit one puzzle

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Across
  1. 2. weak acids or bases that can react with strong acids
  2. 5. a measurement system called
  3. 8. acids compounds with an amino group (-NH2) and a carboxl group (COOH on the other end
  4. 9. joined together by polymers
  5. 10. atom with partial negative charge
  6. 11. table salt is
  7. 13. attraction of different substance
  8. 16. a material composed of two or more elements
  9. 17. macromolecules containing nitrogen as well as carbon hydrogen and oxygen
  10. 20. monomers made that consist three components
Down
  1. 1. acids polymers assembled from nucleotides
  2. 3. made from carbon and hydrogen atoms
  3. 4. made of carbon hydrogen and oxygen atoms
  4. 6. forming a type of mixture
  5. 7. compounds built by smaller units
  6. 12. attraction of same substance
  7. 14. nondisolved material known as
  8. 15. substance in which the solute dissolves
  9. 18. a compound that produces hydroxide (OH-) ions in solution
  10. 19. any compound the releases h+ ions in a solution