Unit 2 Extra Credit

Edit Answers
123456789101112131415
Across
  1. 3. number the number of protons in the nucleus of an atom
  2. 4. A positively charged ion
  3. 8. A subatomic particle that has a negative charge
  4. 9. mass The weighted average mass of all the naturally occurring isotopes of an element
  5. 11. particle A cluster of 2 protons and 2 neutrons emitted from a nucleus in one type of radioactivity
  6. 13. number Number of protons and neutrons
  7. 14. particle a high-speed electron with a 1- charge that is emitted during radioactive decay
  8. 15. Atoms of the same element that have different numbers of neutrons
Down
  1. 1. A subatomic particle that has a positive charge and that is found in the nucleus of an atom
  2. 2. radiation a type of nuclear radiation made of high-energy waves
  3. 5. radiation particles or electromagnetic radiation emitted from the nucleus during radioactive decay
  4. 6. A subatomic particle that has no charge and that is found in the nucleus of an atom
  5. 7. Smallest particle of an element
  6. 10. An atom or group of atoms that has a positive or negative charge.
  7. 12. A negatively charged ion