Periodic Table

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Across
  1. 2. Neutral particles made up of two or more atoms.
  2. 4. Particle with positive charge
  3. 5. Consists of two or more elements or compounds mixed physically.
  4. 7. Neutral particle with no charge
  5. 8. The simplest form of substance
Down
  1. 1. Consists two or more elements combined chemically
  2. 3. Consists of three subatomic particles, which are protons, neutrons and electrons
  3. 6. Particle with negative charge