Star vocab

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Across
  1. 2. The center of an atom
  2. 7. A special kind of gas that can conduct electricity
  3. 8. A very very small particle with nearly no mass
  4. 9. Giving away heat and or light
  5. 11. A positively charged particle
  6. 12. A particle with no charge
  7. 14. An atom with a different number of neutrons
Down
  1. 1. When atoms combine to form a new atom
  2. 3. The movement of a gas or liquid due to a difference in temperature
  3. 4. A negatively charged particle
  4. 5. A large cloud of gas and dust in space
  5. 6. A large hot sphere of gas that creates light
  6. 7. An electron that has positive charge (!)
  7. 10. An isotope of Hydrogen
  8. 13. A unit of temperature