Chemistry in Biology

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