Chemistry

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Across
  1. 1. The dense center of an atom that contains positively charged protons and neutral neutrons.
  2. 4. The number of protons in an atom.
  3. 5. Negatively charged subatomic particle located outside the nucleus of an atom in the electron cloud.
  4. 9. Small particles that make up the atom of an element. Include protons, neutrons, and electrons.
  5. 10. The measurement of the size of an atom (includes the nucleus and electron cloud).
Down
  1. 2. An abbreviation of the chemical name of an element.
  2. 3. The number of protons plus neutrons in an atom.
  3. 6. A subatomic particle in the nucleus of an atom that has no charge.
  4. 7. A positive subatomic particle in the nucleus of an atom.
  5. 8. The area surrounding the nucleus within an atom that contains negatively charged subatomic particles.