Cades Science Vocab Crossword

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Across
  1. 4. A complete visual spectrum with no frequency gaps.
  2. 5. The dense central part of an atom made up of protons and neutrons.
  3. 8. A three-dimensional region of space around nucleus in which as many as two electrons are likely to be found.
  4. 13. A law stating that every compound is formed of elements combined in mass ratios that are unique for that compound.
  5. 14. Having to do with quantities in which there are only separate, discrete values allowed.
  6. 17. The nucleus of the helium atom produced as the byproduct of a nuclear decay process.
  7. 18. A neutral particle in an atom's nucleus.
Down
  1. 1. The number of protons in the nucleus of an atom.
  2. 2. A spectrum showing only certain colors or wavelengths of light.
  3. 3. The principle that it is impossible to know both the energy or momentum (velocity) and the exact position of an electron at the same time.
  4. 6. An atom's lowest energy state.
  5. 7. A neutral particle with a centrally located nucleus, consisting of protons and neutrons, with electrons around it: The smallest particle that that makes up an element and that is capable of chemical interactions.
  6. 9. A particle in an atom's nucleus with a +1 charge and a mass of 1.673x10^-27
  7. 10. The concept that if waves can behave like particles, then particles can also behave like waves.
  8. 11. A region around the nucleus containing a specified group of electrons in sub-levels and orbitals.
  9. 12. A packet of electromagnetic energy modeled as a particle that transmits electromagnetic force in the standard form of matter.
  10. 15. The stream of electrons emitted from the cathode in a cathode-ray tube.
  11. 16. A particle with a -1 charge and a mass of 9.11x10^-31 kg found orbiting the nucleus in an atom.