Chemistry

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  1. 5. Negatively charged subatomic particle located outside the nucleus of an atom in the electron cloud.
  2. 7. Types of atoms with the same number of protons or atomic number but have different numbers of neutrons resulting in different atomic mass units.
  3. 8. An abbreviation of the chemical name of an element.
  4. 9. A subatomic particle in the nucleus of an atom that has no charge.
Down
  1. 1. Small particles that make up the atom of an element. Include protons, neutrons, and electrons.
  2. 2. The number of protons in an atom.
  3. 3. A positive subatomic particle in the nucleus of an atom.
  4. 4. (AMU) The number of protons plus neutrons in an atom.
  5. 6. The area surrounding the nucleus within an atom that contains negatively charged subatomic particles.
  6. 9. The dense center of an atom that contains positively charged protons and neutral neutrons.