Chemistry Review

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Across
  1. 5. Element that has 14 protons.
  2. 6. A _______ is a subatomic particle that has no charge.
  3. 7. The _________ number is the same as the number of protons.
  4. 8. Element that has an atomic number of 2.
  5. 10. Oxygen-18 has _______ neutrons.
Down
  1. 1. The positively charged subatomic particle in the nucleus of an atom.
  2. 2. A __________ is an ion with a positive charge.
  3. 3. The subatomic particle of an atom that has a negative charge.
  4. 4. A ___________ is an ion with a negative charge.
  5. 7. An ________ is the smallest unit of an element.
  6. 9. An ________ is an atom with any charge.