Periodic Table

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Across
  1. 1. also known as a family. used to differentiate the type of elements ex) Metals, Metalloids, Nonmetals
  2. 5. horizontal rows in a periodic table. there are 7
  3. 6. Average total mass of the isotopes of the element
Down
  1. 2. a concept that helps identify someone or something
  2. 3. Chart showing all of the elements arranged according to the repeating pattern of their properties
  3. 4. letters to indicate the element
  4. 7. vertical rows in a periodic table. There are 18