Periodic Table

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Across
  1. 2. Each horizontal row of elements is called this.
  2. 3. All the ______ are radioactive.
  3. 4. Phase in which matter has a definite shape and volume.
  4. 5. Matter with no definite shape but with a definite volume.
  5. 8. This word means shininess.
  6. 11. ____ Is the first element family. (2 words)
  7. 12. This man created the modern Periodic Table. (2 words)
  8. 13. The gradual wearing away of metal is called _____.
  9. 14. The first row of rare Earth elements is the _____ Series.
  10. 16. Amount of matter in an object.
  11. 17. This is the most abundent element in the Earth's atmosphere.
  12. 18. Coulumns of elements are called _____.
Down
  1. 1. Fluorine, chlorine, and iodine are all apart of this family.
  2. 2. This law states that the physical and chemical properties of the elements are periodic functions of their atomic numbers. (2 words)
  3. 6. An element that is a good conductor of heat and electricity.
  4. 7. Dmitri ________ created the Periodic Table.
  5. 9. The elements were arrange in increasing order of ____. (2 words)
  6. 10. Elements within the same family of the periodic table have similar properties because they have the same number of valence electrons. (2 words)
  7. 15. Simplest type of pure substance.
  8. 18. Phase in which matter has no definite shape or volume.