Routt Chemistry 11 - 21

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Across
  1. 5. Symbols used to show the atomic make up of a molecule
  2. 8. an average atomic mass based on numbers of an element’s isotopes found in nature
  3. 10. a heavier unstable element that breaks down (decays) to a lighter more stable element
Down
  1. 1. the total number of protons plus neutrons in an atom
  2. 2. the process of radioisotope decay
  3. 3. sentence used to show the reactants and products of a chemical reaction
  4. 4. chemicals at the beginning of the chemical reaction
  5. 5. Small particles formed when atoms form chemical bonds
  6. 6. chemicals formed at the end of a chemical reaction
  7. 7. an atom with an unusual number of neutrons
  8. 9. A charged atom (an atom having an unequal number of protons and neutrons)