Chemistry Vocabulary Review

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Across
  1. 1. A vertical column on the periodic table is called a _____.
  2. 3. A horizontal row on the periodic table is called a _____.
  3. 4. The _____ is the center of an atom.
  4. 6. The _____ of oxygen is about 16 g/mol.
  5. 9. The _____ has no charge.
Down
  1. 2. The _____ has a positive charge.
  2. 3. The _____ of air at sea level is about 1 atm.
  3. 5. The _____ has a negative charge.
  4. 6. The _____ of 1 mole of carbon is 12.0 g.
  5. 7. The _____ constant is the number of particles in 1 mole of substance.
  6. 8. The _____ of a gas is measured in liters.