Chemistry in Biology

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Across
  1. 2. Carbon ____________ happens when nitrogen becomes carbon through beta decay
  2. 4. A compound in which the atoms are held together by covalent bonds.
  3. 6. A pure substance that cannot be broken down by physical means that contains more than one element
  4. 7. ________ bonds occur when electrons are transferred
  5. 9. __________-12 is used to date substances that have once been alive
  6. 11. The beginning portion of a chemical reaction
  7. 14. __________ Isotopes are broken down by radiation when the nucleus of an atom breaks up
  8. 15. ____________ bonds occur when electrons are shared
  9. 18. Atoms of the same element that have the same number of protons and electrons but have a different number of neutrons
  10. 19. Neutrons and Protons are located in the __________
Down
  1. 1. The building blocks of matter
  2. 3. A pure substance that cannot be broken down by physical means and found on a table
  3. 5. ____________ = Atoms
  4. 8. The study of matter
  5. 10. Are the process by which atoms or groups of atoms in substances are reorganized into different substances
  6. 12. The result of a chemical reaction
  7. 13. The neutral part of an atom
  8. 16. Part of the atom located on the outside of the nucleus
  9. 17. The positively charged part of an atom