Atomic Theory

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Across
  1. 3. A minute portion of matter
  2. 7. A stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign
  3. 8. charges Is the physical property of matter that causes it to experience a force when placed in an electromagnetic field
  4. 9. particles A particle smaller than an atom or cluster of such particles
Down
  1. 1. orbital Are regions of space around the nucleus of an atom where an electron is likely to be found
  2. 2. A subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen
  3. 4. The basic unit of a chemical element
  4. 5. A stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids
  5. 6. The positively charged central core of an atom, consisting of protons and neutrons and containing nearly all its mass
  6. 10. A coherent, typically large body of matter with no definite shape