Unit 2 Vocabulary

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Across
  1. 2. a vertical column of elements in the periodic table
  2. 4. a subatomic particle that has no charge
  3. 7. a change of matter from one for to another without a change in properties
  4. 8. the sum of the numbers of protons and neutrons
  5. 11. the weighted average of the masses of all naturally occurring isotopes of an element
  6. 12. smallest unit of an element
  7. 14. a region around the nucleus of an atom where electrons are found
  8. 16. a subatomic particle that has a negative charge
Down
  1. 1. a subatomic particle with a positive charge
  2. 3. an arrangement of the elements in order of their atomic numbers
  3. 5. a one, two, or three letter abbreviation of the name of an element
  4. 6. an element that is shiny and conducts heat and electricity
  5. 9. an element that has properties of both metals and nonmetals
  6. 10. a horizontal row of elements in the periodic table
  7. 11. the number of protons in the nucleus of an atom
  8. 13. an atom's central region made up of protons and neutrons
  9. 15. an element that does not conduct heat and electricity well