Chemistry Cross Word

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Across
  1. 3. - What experiment led to the discovery of the electron
  2. 4. - An isotope that emits radioactive gamma rays an/or subatomic particles (for example, alpha and/r beta particles)
  3. 7. - Positive Charged Particle
  4. 8. - The number of protons in a nucleus
Down
  1. 1. - Negative Charged Particle
  2. 2. - Experiment Ran by Ernest Rutherford
  3. 5. - The total number of protons and neutrons in a nucleus
  4. 6. - Atoms with the same number of protons but different number of neutrons