CP6 Key Word Crossword

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Across
  1. 3. a radiation particle made of high-speed electrons
  2. 6. when an atom gains so much energy it loses an electron and becomes an ion
  3. 9. a positively charged sub-atomic particle with a mass of 1 found in the nucleus
  4. 10. a negatively charged sub-atomic particle with a mass of 1/1835 found in shells
  5. 11. a type of gas known for being a source of background radiation
  6. 13. energy emitted from an atom
  7. 14. when an unstable nucleus breaks down
Down
  1. 1. the length of time it takes for half of a radioactive sample to break down
  2. 2. what happens when radiation causes damage to the DNA inside a cell
  3. 4. a radiation particle made of two protons and two neutrons
  4. 5. an atom of the same element with a different atomic mass
  5. 7. an uncharged sub-atomic particle with a mass of 1 found in the nucleus
  6. 8. any sub-atomic particle found in the nucleus
  7. 9. a radiation particle made of high-speed positively charged particles
  8. 12. a type of radiation that is a high frequency wave