The Periodic Table

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Across
  1. 5. indicates the number of atoms of each element
  2. 9. each element is represented by this
  3. 11. this is used to represent a compound
  4. 13. a process in which one or more substances are converted to one or more different substances
  5. 14. protons have this type of charge
Down
  1. 1. atoms are the building _______ of all matter
  2. 2. change which alters the physical properties of a substance without changing its identity
  3. 3. the formation of a new substance through a reaction
  4. 4. what we use to identify different elements
  5. 6. a pure substance made by chemically combining two or more elements
  6. 7. table that displays the chemical elements
  7. 8. electrons have this type of charge
  8. 10. if the subscript is changed the ______ is changed
  9. 12. the most basic unit of matter