Chemistry

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Across
  1. 1. a part of the nucleus of an atom that has a negative charge
  2. 3. The study of matter and its properties behavior
  3. 4. The part of the atom that orbits around the nucleus and has a negative charge
  4. 5. the basic unit of chemistry
Down
  1. 1. The list of elements
  2. 2. A part of an atom’s nucleus with no charge