Chemistry Terms

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Across
  1. 1. Energy levels where electrons are found
  2. 5. A negatively charged particle orbiting the nucleus
  3. 6. A neutral subatomic particle found in the nucleus
  4. 8. How easily an element undergoes a chemical reaction
Down
  1. 2. A pure substance made of only one type of atom
  2. 3. A horizontal row in the periodic table
  3. 4. A positively charged subatomic particle
  4. 7. A vertical column in the periodic table