Biology Ch2 The Chemistry of Life

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Across
  1. 1. The combination of 2 or more elements physically mixed
  2. 2. This atom has a different number of neutrons in the nucleus than normal
  3. 4. This atom has a different number of electrons than normal
  4. 7. Macromolecule that has a carbon:hydrogen:oxygen ratio of 1:2:1
  5. 9. The charge of a proton
  6. 10. A substance that dissolves other substances
  7. 12. This is two or more elements chemically combined
  8. 15. The attraction of molecules of different substances
  9. 16. Macromolecule made up of carbon, phosphate, and nitrogen
  10. 17. The charge of an electron
  11. 18. Mixtures of water and nondissolved substances
  12. 19. This bond is the transfer of electrons from one element to another
Down
  1. 1. Smallest unit of most compounds
  2. 3. The substance dissolved in a solution
  3. 5. The scale of acids and bases that goes from 0-14
  4. 6. Macromolecule that is mostly carbon and hydrogen, and not soluable in water
  5. 7. This bond is a sharing of valence electrons between two elements
  6. 8. The basic building block of matter
  7. 11. The atomic _____ is the number of protons in an element
  8. 13. Macromolecule made up of nitrogen, carbon, hydrogen, and oxygen
  9. 14. The attraction of molecules of the same substance