Periodic table

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Across
  1. 2. Is the total number of protons that each atom of that element has.
  2. 3. atom are distributed in "layers" or energy levels.
  3. 4. are the way in which the electrons are organized in the electronic layers.
  4. 6. The way in which electrons are structured, communicate or organize in an atom.
  5. 8. Is the electron that have te positive charge.
Down
  1. 1. a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds.
  2. 5. Atomic mass is the mass of an atom, most often expressed in units of unified atomic mass.
  3. 7. Chemical elements in the form of a table, ordered by their atomic number, by their electron configuration and their chemical properties.