Elements and the periodic table

12345678
Across
  1. 3. Elements in the same group have similar ____
  2. 4. chart of elements arranged according to their properties
  3. 6. the number of protons in the nucleus of each atom's nucleus
  4. 7. a row in the periodic table
  5. 8. the letter you find in the periodic table, indicates the element's ____
Down
  1. 1. a column in the periodic table
  2. 2. what identifies the atomic number of an element
  3. 5. shows chemical symbol, atomic number, and atomic mass