Nuclear Physics and Microscopic Physics

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Across
  1. 3. Flourine's atomic number.
  2. 5. AMU stands for ______ mass unit.
  3. 7. This fundamental particle has a negative charge.
  4. 9. Can be described as "nuclear glue".
  5. 12. The ratio of protons to _____ in the stable nucleus of a light-weight atom are approximately 1:1.
  6. 13. A proton or neutron.
  7. 16. This is about the mass of a neutron or proton.
  8. 18. _____-14 has a half-life of 5,700 years.
  9. 20. If you can handle an object, it is held together by ______ force.
  10. 21. This atom has an atomic number of 1.
  11. 23. The classic concept of a(n) ______ was that it was the smallest component of matter.
  12. 24. Two identical electrical charges _______ each other.
  13. 25. The simplest (most fundamental) objects obtained by chemical means.
  14. 27. U238 is an isotope called __________.
  15. 28. These have most of the mass but hardly any of the volume of an atom.
Down
  1. 1. Light was previously thought to only be a wave, but is also a stream of _______.
  2. 2. Compared to the electrical and gravitational forces, the nuclear force is _____ range.
  3. 4. The action of dividing or splitting something into two or more parts.
  4. 6. This has the same number of protons, different number of neutrons.
  5. 8. These fundamental particles can be found orbiting the nucleus.
  6. 9. H2SO4 is a ______
  7. 10. Currently the objects that we hope are the smallest components of matter are _______ particles.
  8. 11. The first example of anti-matter.
  9. 14. nuclear ______ the process by which an unstable atomic nucleus loses energy by radiation.
  10. 15. _____ force is strong compared to electrical and gravitational forces.
  11. 17. ______is responsible for the heat from inside the Earth.
  12. 19. These have a very regular, organized structure.
  13. 22. A ______ ray is a penetrating form of electromagnetic radiation arising from the radioactive decay of atomic nuclei.
  14. 26. The most obvious example of fusion is the ____.