Particles

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Across
  1. 1. elements on the left side of the periodic table
  2. 2. the smallest particle of an element… these make up molecules when 2 or more of them are combined
  3. 3. group 18 of the periodic table
  4. 7. elements on the right side of the periodic table
  5. 8. something made of only one type of particle (examples are helium, citric acid, hydrogen gas, and menthol)
  6. 9. a substance made of molecules that are made up of different elements
  7. 10. a substance that can not be broken down into anything simpler; they are made of only one type of atom
Down
  1. 1. the substance that has the same chemical formula as vanillin (C8H8O3)
  2. 4. vertical columns on the periodic table
  3. 5. a particle made of two or more atoms
  4. 6. horizontal rows on the periodic table