Chemistry in Biology

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