The Periodic Table

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Across
  1. 5. is an element that is generally a poor conductor of heat and electricity
  2. 7. made to Mendeleev
  3. 8. is an element that is a good conductor of heat and electricity
  4. 10. table is a way of arranging the elements in order of their Atomic numbers so that elements with simular propertis appear in the same vertical column and group
  5. 12. is called a negative ion
  6. 14. Russian table maker
  7. 15. is called a positive ion
Down
  1. 1. are called the elements in group 17
  2. 2. are the same 14 elements from thorium Atomic mas 90 to lawrencium Atomic number 103
  3. 3. part metal & part non-metal
  4. 4. is a measuare of the ability of an atom to attract shared electrons when the atomis a part of compound
  5. 6. is an atom or group of bonded atoms that has a positive or negative charge
  6. 9. is a horizontal row of the periodic table
  7. 11. is a vertical column of the periodic table
  8. 13. are the 14 elements from cerium Atomic number 58 to lutetium Atomic number 71