Across
- 4. subatomic particle of about the same mass as a proton without an electric charge
- 8. every compound is formed of elements combined in specific ratios by mass that are unique for that compound
- 9. a region around the nucleus containing a specified group of electrons in sub-levels and orbitals
- 12. an emission spectrum that consists of a continuum
- 14. smallest particle capable of chemical interactions
- 15. having to do with quantities in which there are only separate discrete values allowed
- 16. number of protons in the nucleus
- 17. atoms lowest energy state, contains six or seven levels
- 18. positive particles in the nucleus
Down
- 1. subatomic particle with a charge of negative electricity
- 2. the concept that if waves can behave like particles then particles can also behave like waves
- 3. a packet of electromagnetic energy modeled as a particle that transmits electromagnetic force in the standard model of matter
- 5. the principle that it is impossible to now both the energy or momentum and the exact position of an electron at the same time
- 6. an emission spectrum consisting of separate isolated lines
- 7. positively charged central core of an atom
- 10. a 3d region of space around a nucleus in which as many as 2 electrons are likely to be found
- 11. helium nucleus emitted by some radioactive substances, originally regarded as a ray
- 13. a beam of electrons emitted from the cathode of a high vacuum tube