Periodic Table Test Review

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Across
  1. 2. A term used to describe a material that can be pulled out into a long wire
  2. 4. A material that does not allow heat or electricity to move through it easily
  3. 6. Smallest particle of an element that still has the properties of that element
  4. 8. Easily broken; not flexible
  5. 10. Vertical column of elements in the periodic table with similar properties
  6. 13. Elements that are good conductors of electric current and heat
  7. 14. The way a substance reflects light from its surface
  8. 16. Something that can be hammered out into thin sheets
  9. 17. Elements that have low conductivity, are not ductile, not malleable, brittle, and/or dull; some are a gas at room temp
  10. 18. A horizontal row of elements in the periodic table whose properties change in predictable ways
  11. 19. A number, usually a decimal, of the average mass of all the isotopes of an element. Also called a Mass Number
  12. 20. The ability of an object to transfer heat or electricity to another object
  13. 21. A subatomic particle that has a positive charge and that is found in the nucleus of an atom
Down
  1. 1. A region around the nucleus of an atom where electrons are found
  2. 3. A subatomic particle that has no charge and that is found in the nucleus of an atom
  3. 5. Center of an atom, where the protons and neutrons are found
  4. 6. A whole number that indicates the number of protons in each atom of the element
  5. 7. A pure substance made of only one kind of atom; appears on the Periodic Table
  6. 9. Elements that have properties of both metals and nonmetals
  7. 11. Two or more atoms bonded together; can be multiple elements or the same kind of element
  8. 12. A subatomic particle that has a negative charge and is found outside the nucleus
  9. 15. Table A chart of the elements showing the repeating pattern of their properties